diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 30d9ca7..7f51a8d 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,39 +1,25 @@
 repos:
 -   repo: git://github.com/pre-commit/pre-commit-hooks
-    rev: v2.1.0
+    rev: v3.3.0
     hooks:
     -   id: check-added-large-files
     -   id: check-docstring-first
     -   id: check-merge-conflict
-#   -   id: check-yaml
+    -   id: check-yaml
     -   id: end-of-file-fixer
-    -   id: flake8
-        args:
-            - --exclude=__init__.py
-            - --exclude=settings*
         language_version: python3
     -   id: requirements-txt-fixer
     -   id: trailing-whitespace
 -   repo: git://github.com/asottile/reorder_python_imports
-    rev: v1.3.4
+    rev: v2.3.6
     hooks:
     -   id: reorder-python-imports
         language_version: python3
 
--   repo: https://github.com/pre-commit/mirrors-autopep8
-    rev: 'v1.4.3'
-    hooks:
-    -   id: autopep8
-        args:
-          - -aaa
-          - --in-place
-          - --experimental
-
--   repo: https://github.com/humitos/mirrors-autoflake.git
-    rev: 'v1.2'
+-   repo: https://github.com/psf/black
+    rev: 20.8b1
     hooks:
-    -   id: autoflake
+    -   id: black
         args:
-          - --in-place
-          - --remove-unused-variables
-          - --remove-all-unused-imports
+          - --line-length
+          - '79'
diff --git a/.travis.yml b/.travis.yml
index 3e5de39..f01706e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,16 +1,25 @@
-dist: xenial
 language: python
 python:
 - '3.6'
 - '3.7'
-install:
-- pip install pytest pyfakefs
-- pip install .
-script: pytest
+- '3.8'
+install: pip install tox-travis pre-commit poetry
+env:
+  global:
+  - secure: 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
+  - secure: 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
+
+script:
+- pre-commit run --all-files
+- tox
+
 deploy:
-  provider: pypi
-  user: cmehay
-  password:
-    secure: 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
+- provider: script
+  before_script:
+    - poetry config pypi-token.pypi $PYPI_PASS
+  script: poetry publish --build
   on:
+    repo: cmehay/pytor
+    branch: master
+    python: '3.8'
     tags: true
diff --git a/Pipfile b/Pipfile
deleted file mode 100644
index 4b9e1cf..0000000
--- a/Pipfile
+++ /dev/null
@@ -1,23 +0,0 @@
-[[source]]
-name = "pypi"
-url = "https://pypi.org/simple"
-verify_ssl = true
-
-[dev-packages]
-tox = "*"
-pre-commit = "*"
-ptpython = "*"
-pylama = "*"
-pylint = "*"
-pytest = "*"
-autopep8 = "*"
-
-[packages]
-pycryptodome = "*"
-numpy = "*"
-pytor = {path = "."}
-fire = "*"
-pyyaml = "*"
-
-[requires]
-python_version = "3"
diff --git a/Pipfile.lock b/Pipfile.lock
deleted file mode 100644
index 50c3a74..0000000
--- a/Pipfile.lock
+++ /dev/null
@@ -1,449 +0,0 @@
-{
-    "_meta": {
-        "hash": {
-            "sha256": "6c048a1792f636c8cfccdc1c50671a6ad8abfad6c635251108d5396bcde5e64a"
-        },
-        "pipfile-spec": 6,
-        "requires": {
-            "python_version": "3"
-        },
-        "sources": [
-            {
-                "name": "pypi",
-                "url": "https://pypi.org/simple",
-                "verify_ssl": true
-            }
-        ]
-    },
-    "default": {
-        "fire": {
-            "hashes": [
-                "sha256:c299d16064ff81cbb649b65988300d4a28b71ecfb789d1fb74d99ea98ae4d2eb"
-            ],
-            "index": "pypi",
-            "version": "==0.1.3"
-        },
-        "numpy": {
-            "hashes": [
-                "sha256:0778076e764e146d3078b17c24c4d89e0ecd4ac5401beff8e1c87879043a0633",
-                "sha256:141c7102f20abe6cf0d54c4ced8d565b86df4d3077ba2343b61a6db996cefec7",
-                "sha256:14270a1ee8917d11e7753fb54fc7ffd1934f4d529235beec0b275e2ccf00333b",
-                "sha256:27e11c7a8ec9d5838bc59f809bfa86efc8a4fd02e58960fa9c49d998e14332d5",
-                "sha256:2a04dda79606f3d2f760384c38ccd3d5b9bb79d4c8126b67aff5eb09a253763e",
-                "sha256:3c26010c1b51e1224a3ca6b8df807de6e95128b0908c7e34f190e7775455b0ca",
-                "sha256:52c40f1a4262c896420c6ea1c6fda62cf67070e3947e3307f5562bd783a90336",
-                "sha256:6e4f8d9e8aa79321657079b9ac03f3cf3fd067bf31c1cca4f56d49543f4356a5",
-                "sha256:7242be12a58fec245ee9734e625964b97cf7e3f2f7d016603f9e56660ce479c7",
-                "sha256:7dc253b542bfd4b4eb88d9dbae4ca079e7bf2e2afd819ee18891a43db66c60c7",
-                "sha256:94f5bd885f67bbb25c82d80184abbf7ce4f6c3c3a41fbaa4182f034bba803e69",
-                "sha256:a89e188daa119ffa0d03ce5123dee3f8ffd5115c896c2a9d4f0dbb3d8b95bfa3",
-                "sha256:ad3399da9b0ca36e2f24de72f67ab2854a62e623274607e37e0ce5f5d5fa9166",
-                "sha256:b0348be89275fd1d4c44ffa39530c41a21062f52299b1e3ee7d1c61f060044b8",
-                "sha256:b5554368e4ede1856121b0dfa35ce71768102e4aa55e526cb8de7f374ff78722",
-                "sha256:cbddc56b2502d3f87fda4f98d948eb5b11f36ff3902e17cb6cc44727f2200525",
-                "sha256:d79f18f41751725c56eceab2a886f021d70fd70a6188fd386e29a045945ffc10",
-                "sha256:dc2ca26a19ab32dc475dbad9dfe723d3a64c835f4c23f625c2b6566ca32b9f29",
-                "sha256:dd9bcd4f294eb0633bb33d1a74febdd2b9018b8b8ed325f861fffcd2c7660bb8",
-                "sha256:e8baab1bc7c9152715844f1faca6744f2416929de10d7639ed49555a85549f52",
-                "sha256:ec31fe12668af687b99acf1567399632a7c47b0e17cfb9ae47c098644ef36797",
-                "sha256:f12b4f7e2d8f9da3141564e6737d79016fe5336cc92de6814eba579744f65b0a",
-                "sha256:f58ac38d5ca045a377b3b377c84df8175ab992c970a53332fa8ac2373df44ff7"
-            ],
-            "index": "pypi",
-            "version": "==1.16.4"
-        },
-        "pycryptodome": {
-            "hashes": [
-                "sha256:0281dc6a65a4d0d9e439f54e0ad5faf27bfdc2ebe9ead36912bac74a0920fa2e",
-                "sha256:02af9b284f5c9a55f06f5e4532c16c9b7bd958e293e93969934d864ef7bd87ee",
-                "sha256:09da99372fb69762e4b9690291176a166cc351793e2e1c9405d29ca291503aa8",
-                "sha256:0c2400ccfc049c3f24e65d4f02bb4208d86e408011019e455fab7f50d2b226c9",
-                "sha256:2081dd6dce6b21bf3596427edaedd4f2561dce616893b162ed2c674f3a3ca70a",
-                "sha256:28b86ec9fdb005a2a18e4862a3a7277046738825ee8dc89cda5657e75a396089",
-                "sha256:2d790c0d4c0d5edcf5fbab4e2af7b03757e40c5ae8d217f0dfe9ddea37fe130f",
-                "sha256:2f24906153dca16528cf5515b1afa9ef635423d5a654904e861765f88ca667b6",
-                "sha256:30d283939896fa4bacbdb9fa86e6fd51e9a5b953a511e210b38481f697f289f5",
-                "sha256:31f78b67f97830d137f74813c0502a181a03b43a32ed124049bb20428176c307",
-                "sha256:33c1f3a380fd38ab4dd4372bef17e98002b360b52814bb1b077693b1bd06ec87",
-                "sha256:34091e9a6650c44e25339f22fc821396f19f152f65be2546edd823a093fb5a04",
-                "sha256:567fb73951ab6865a2eb1a0060b54be1e27302574f6c65879525bdf53fab49e1",
-                "sha256:5bc40f8aa7ba8ca7f833ad2477b9d84e1bfd2630b22a46d9bbd221982f8c3ac0",
-                "sha256:6b0a0ccf33c7a6100c569667c888335a4aaf0d22218cb97b4963a65d70f6c343",
-                "sha256:71b93157f1ce93fc7cfff9359b76def2b4826a7ef7a7f95e070161368e7f584a",
-                "sha256:7d939d511b7dac29b2d936706786771ecb8256e43fade5cdb0e8bc58f02b86cf",
-                "sha256:7fbc5a93d52e4c51487f4648b00dc41700adb144d10fc567b05f852e76c243ad",
-                "sha256:9cb94b8f9c915a5d2b273d612a25a8e5d67b49543f8eb6bcec0275ac46cda421",
-                "sha256:a585ea1722f9731e75881d5ffcc51d11c794d244ac57e7c2a9cbb8d5ac729302",
-                "sha256:a6458dd7a10ae51f6fce56bdfc79bf6d3b54556237045d09e77fbda9d6d37864",
-                "sha256:a9fb92e948128bce0239b87c6efcf2cb1c5a703d0b41dd6835211e6fafd1c5df",
-                "sha256:b0b6b4ca1c53e7d6ca9f2720919f63837f05e7a5f92912a2bc29bfd03ed3b54f",
-                "sha256:b7d22c8d648aaa3a7ec785eda544402141eb78ac5ffbba4cbe2c3a1f52276870",
-                "sha256:bc9560574a868cfa2ba781b7bb0b4685b08ea251697abfc49070ffc05e1cbee6",
-                "sha256:c0c5a576f3f7b7de3f86889cb47eb51b59dc11db9cf1e2a0f51eb4d988010ea4",
-                "sha256:e1c91c2fa942a71c98a7a1f462de6dbbe82f34b9267eb8131314d97bd13bf0d4",
-                "sha256:ec936361ad78aa95382c313df95777795b8185aac5dd3ec5463363ea94b556fc"
-            ],
-            "index": "pypi",
-            "version": "==3.8.2"
-        },
-        "pytor": {
-            "path": "."
-        },
-        "pyyaml": {
-            "hashes": [
-                "sha256:57acc1d8533cbe51f6662a55434f0dbecfa2b9eaf115bede8f6fd00115a0c0d3",
-                "sha256:588c94b3d16b76cfed8e0be54932e5729cc185caffaa5a451e7ad2f7ed8b4043",
-                "sha256:68c8dd247f29f9a0d09375c9c6b8fdc64b60810ebf07ba4cdd64ceee3a58c7b7",
-                "sha256:70d9818f1c9cd5c48bb87804f2efc8692f1023dac7f1a1a5c61d454043c1d265",
-                "sha256:86a93cccd50f8c125286e637328ff4eef108400dd7089b46a7be3445eecfa391",
-                "sha256:a0f329125a926876f647c9fa0ef32801587a12328b4a3c741270464e3e4fa778",
-                "sha256:a3c252ab0fa1bb0d5a3f6449a4826732f3eb6c0270925548cac342bc9b22c225",
-                "sha256:b4bb4d3f5e232425e25dda21c070ce05168a786ac9eda43768ab7f3ac2770955",
-                "sha256:cd0618c5ba5bda5f4039b9398bb7fb6a317bb8298218c3de25c47c4740e4b95e",
-                "sha256:ceacb9e5f8474dcf45b940578591c7f3d960e82f926c707788a570b51ba59190",
-                "sha256:fe6a88094b64132c4bb3b631412e90032e8cfe9745a58370462240b8cb7553cd"
-            ],
-            "index": "pypi",
-            "version": "==5.1.1"
-        },
-        "six": {
-            "hashes": [
-                "sha256:3350809f0555b11f552448330d0b52d5f24c91a322ea4a15ef22629740f3761c",
-                "sha256:d16a0141ec1a18405cd4ce8b4613101da75da0e9a7aec5bdd4fa804d0e0eba73"
-            ],
-            "version": "==1.12.0"
-        }
-    },
-    "develop": {
-        "aspy.yaml": {
-            "hashes": [
-                "sha256:463372c043f70160a9ec950c3f1e4c3a82db5fca01d334b6bc89c7164d744bdc",
-                "sha256:e7c742382eff2caed61f87a39d13f99109088e5e93f04d76eb8d4b28aa143f45"
-            ],
-            "version": "==1.3.0"
-        },
-        "astroid": {
-            "hashes": [
-                "sha256:6560e1e1749f68c64a4b5dee4e091fce798d2f0d84ebe638cf0e0585a343acf4",
-                "sha256:b65db1bbaac9f9f4d190199bb8680af6f6f84fd3769a5ea883df8a91fe68b4c4"
-            ],
-            "version": "==2.2.5"
-        },
-        "atomicwrites": {
-            "hashes": [
-                "sha256:03472c30eb2c5d1ba9227e4c2ca66ab8287fbfbbda3888aa93dc2e28fc6811b4",
-                "sha256:75a9445bac02d8d058d5e1fe689654ba5a6556a1dfd8ce6ec55a0ed79866cfa6"
-            ],
-            "version": "==1.3.0"
-        },
-        "attrs": {
-            "hashes": [
-                "sha256:69c0dbf2ed392de1cb5ec704444b08a5ef81680a61cb899dc08127123af36a79",
-                "sha256:f0b870f674851ecbfbbbd364d6b5cbdff9dcedbc7f3f5e18a6891057f21fe399"
-            ],
-            "version": "==19.1.0"
-        },
-        "autopep8": {
-            "hashes": [
-                "sha256:4d8eec30cc81bc5617dbf1218201d770dc35629363547f17577c61683ccfb3ee"
-            ],
-            "index": "pypi",
-            "version": "==1.4.4"
-        },
-        "cfgv": {
-            "hashes": [
-                "sha256:32edbe09de6f4521224b87822103a8c16a614d31a894735f7a5b3bcf0eb3c37e",
-                "sha256:3bd31385cd2bebddbba8012200aaf15aa208539f1b33973759b4d02fc2148da5"
-            ],
-            "version": "==2.0.0"
-        },
-        "docopt": {
-            "hashes": [
-                "sha256:49b3a825280bd66b3aa83585ef59c4a8c82f2c8a522dbe754a8bc8d08c85c491"
-            ],
-            "version": "==0.6.2"
-        },
-        "filelock": {
-            "hashes": [
-                "sha256:18d82244ee114f543149c66a6e0c14e9c4f8a1044b5cdaadd0f82159d6a6ff59",
-                "sha256:929b7d63ec5b7d6b71b0fa5ac14e030b3f70b75747cef1b10da9b879fef15836"
-            ],
-            "version": "==3.0.12"
-        },
-        "identify": {
-            "hashes": [
-                "sha256:0a11379b46d06529795442742a043dc2fa14cd8c995ae81d1febbc5f1c014c87",
-                "sha256:43a5d24ffdb07bc7e21faf68b08e9f526a1f41f0056073f480291539ef961dfd"
-            ],
-            "version": "==1.4.5"
-        },
-        "importlib-metadata": {
-            "hashes": [
-                "sha256:6dfd58dfe281e8d240937776065dd3624ad5469c835248219bd16cf2e12dbeb7",
-                "sha256:cb6ee23b46173539939964df59d3d72c3e0c1b5d54b84f1d8a7e912fe43612db"
-            ],
-            "version": "==0.18"
-        },
-        "isort": {
-            "hashes": [
-                "sha256:54da7e92468955c4fceacd0c86bd0ec997b0e1ee80d97f67c35a78b719dccab1",
-                "sha256:6e811fcb295968434526407adb8796944f1988c5b65e8139058f2014cbe100fd"
-            ],
-            "version": "==4.3.21"
-        },
-        "jedi": {
-            "hashes": [
-                "sha256:53c850f1a7d3cfcd306cc513e2450a54bdf5cacd7604b74e42dd1f0758eaaf36",
-                "sha256:e07457174ef7cb2342ff94fa56484fe41cec7ef69b0059f01d3f812379cb6f7c"
-            ],
-            "version": "==0.14.1"
-        },
-        "lazy-object-proxy": {
-            "hashes": [
-                "sha256:159a745e61422217881c4de71f9eafd9d703b93af95618635849fe469a283661",
-                "sha256:23f63c0821cc96a23332e45dfaa83266feff8adc72b9bcaef86c202af765244f",
-                "sha256:3b11be575475db2e8a6e11215f5aa95b9ec14de658628776e10d96fa0b4dac13",
-                "sha256:3f447aff8bc61ca8b42b73304f6a44fa0d915487de144652816f950a3f1ab821",
-                "sha256:4ba73f6089cd9b9478bc0a4fa807b47dbdb8fad1d8f31a0f0a5dbf26a4527a71",
-                "sha256:4f53eadd9932055eac465bd3ca1bd610e4d7141e1278012bd1f28646aebc1d0e",
-                "sha256:64483bd7154580158ea90de5b8e5e6fc29a16a9b4db24f10193f0c1ae3f9d1ea",
-                "sha256:6f72d42b0d04bfee2397aa1862262654b56922c20a9bb66bb76b6f0e5e4f9229",
-                "sha256:7c7f1ec07b227bdc561299fa2328e85000f90179a2f44ea30579d38e037cb3d4",
-                "sha256:7c8b1ba1e15c10b13cad4171cfa77f5bb5ec2580abc5a353907780805ebe158e",
-                "sha256:8559b94b823f85342e10d3d9ca4ba5478168e1ac5658a8a2f18c991ba9c52c20",
-                "sha256:a262c7dfb046f00e12a2bdd1bafaed2408114a89ac414b0af8755c696eb3fc16",
-                "sha256:acce4e3267610c4fdb6632b3886fe3f2f7dd641158a843cf6b6a68e4ce81477b",
-                "sha256:be089bb6b83fac7f29d357b2dc4cf2b8eb8d98fe9d9ff89f9ea6012970a853c7",
-                "sha256:bfab710d859c779f273cc48fb86af38d6e9210f38287df0069a63e40b45a2f5c",
-                "sha256:c10d29019927301d524a22ced72706380de7cfc50f767217485a912b4c8bd82a",
-                "sha256:dd6e2b598849b3d7aee2295ac765a578879830fb8966f70be8cd472e6069932e",
-                "sha256:e408f1eacc0a68fed0c08da45f31d0ebb38079f043328dce69ff133b95c29dc1"
-            ],
-            "version": "==1.4.1"
-        },
-        "mccabe": {
-            "hashes": [
-                "sha256:ab8a6258860da4b6677da4bd2fe5dc2c659cff31b3ee4f7f5d64e79735b80d42",
-                "sha256:dd8d182285a0fe56bace7f45b5e7d1a6ebcbf524e8f3bd87eb0f125271b8831f"
-            ],
-            "version": "==0.6.1"
-        },
-        "more-itertools": {
-            "hashes": [
-                "sha256:3ad685ff8512bf6dc5a8b82ebf73543999b657eded8c11803d9ba6b648986f4d",
-                "sha256:8bb43d1f51ecef60d81854af61a3a880555a14643691cc4b64a6ee269c78f09a"
-            ],
-            "version": "==7.1.0"
-        },
-        "nodeenv": {
-            "hashes": [
-                "sha256:ad8259494cf1c9034539f6cced78a1da4840a4b157e23640bc4a0c0546b0cb7a"
-            ],
-            "version": "==1.3.3"
-        },
-        "packaging": {
-            "hashes": [
-                "sha256:0c98a5d0be38ed775798ece1b9727178c4469d9c3b4ada66e8e6b7849f8732af",
-                "sha256:9e1cbf8c12b1f1ce0bb5344b8d7ecf66a6f8a6e91bcb0c84593ed6d3ab5c4ab3"
-            ],
-            "version": "==19.0"
-        },
-        "parso": {
-            "hashes": [
-                "sha256:63854233e1fadb5da97f2744b6b24346d2750b85965e7e399bec1620232797dc",
-                "sha256:666b0ee4a7a1220f65d367617f2cd3ffddff3e205f3f16a0284df30e774c2a9c"
-            ],
-            "version": "==0.5.1"
-        },
-        "pluggy": {
-            "hashes": [
-                "sha256:0825a152ac059776623854c1543d65a4ad408eb3d33ee114dff91e57ec6ae6fc",
-                "sha256:b9817417e95936bf75d85d3f8767f7df6cdde751fc40aed3bb3074cbcb77757c"
-            ],
-            "version": "==0.12.0"
-        },
-        "pre-commit": {
-            "hashes": [
-                "sha256:92e406d556190503630fd801958379861c94884693a032ba66629d0351fdccd4",
-                "sha256:cccc39051bc2457b0c0f7152a411f8e05e3ba2fe1a5613e4ee0833c1c1985ce3"
-            ],
-            "index": "pypi",
-            "version": "==1.17.0"
-        },
-        "prompt-toolkit": {
-            "hashes": [
-                "sha256:11adf3389a996a6d45cc277580d0d53e8a5afd281d0c9ec71b28e6f121463780",
-                "sha256:2519ad1d8038fd5fc8e770362237ad0364d16a7650fb5724af6997ed5515e3c1",
-                "sha256:977c6583ae813a37dc1c2e1b715892461fcbdaa57f6fc62f33a528c4886c8f55"
-            ],
-            "version": "==2.0.9"
-        },
-        "ptpython": {
-            "hashes": [
-                "sha256:51a74abe931f692360a32d650c2ba1ca329c08f3ed9b1de8abcd1164e0b0a6a7",
-                "sha256:938ee050e37d61c138dbbeb21383dfef8b9ed4ffb453a5f34041f42025bf5042",
-                "sha256:ebe9d68ea7532ec8ab306d4bdc7ec393701cd9bbd6eff0aa3067c821f99264d4"
-            ],
-            "index": "pypi",
-            "version": "==2.0.4"
-        },
-        "py": {
-            "hashes": [
-                "sha256:64f65755aee5b381cea27766a3a147c3f15b9b6b9ac88676de66ba2ae36793fa",
-                "sha256:dc639b046a6e2cff5bbe40194ad65936d6ba360b52b3c3fe1d08a82dd50b5e53"
-            ],
-            "version": "==1.8.0"
-        },
-        "pycodestyle": {
-            "hashes": [
-                "sha256:95a2219d12372f05704562a14ec30bc76b05a5b297b21a5dfe3f6fac3491ae56",
-                "sha256:e40a936c9a450ad81df37f549d676d127b1b66000a6c500caa2b085bc0ca976c"
-            ],
-            "version": "==2.5.0"
-        },
-        "pydocstyle": {
-            "hashes": [
-                "sha256:58c421dd605eec0bce65df8b8e5371bb7ae421582cdf0ba8d9435ac5b0ffc36a"
-            ],
-            "version": "==4.0.0"
-        },
-        "pyflakes": {
-            "hashes": [
-                "sha256:17dbeb2e3f4d772725c777fabc446d5634d1038f234e77343108ce445ea69ce0",
-                "sha256:d976835886f8c5b31d47970ed689944a0262b5f3afa00a5a7b4dc81e5449f8a2"
-            ],
-            "version": "==2.1.1"
-        },
-        "pygments": {
-            "hashes": [
-                "sha256:71e430bc85c88a430f000ac1d9b331d2407f681d6f6aec95e8bcfbc3df5b0127",
-                "sha256:881c4c157e45f30af185c1ffe8d549d48ac9127433f2c380c24b84572ad66297"
-            ],
-            "version": "==2.4.2"
-        },
-        "pylama": {
-            "hashes": [
-                "sha256:9bae53ef9c1a431371d6a8dca406816a60d547147b60a4934721898f553b7d8f",
-                "sha256:fd61c11872d6256b019ef1235be37b77c922ef37ac9797df6bd489996dddeb15"
-            ],
-            "index": "pypi",
-            "version": "==7.7.1"
-        },
-        "pylint": {
-            "hashes": [
-                "sha256:5d77031694a5fb97ea95e828c8d10fc770a1df6eb3906067aaed42201a8a6a09",
-                "sha256:723e3db49555abaf9bf79dc474c6b9e2935ad82230b10c1138a71ea41ac0fff1"
-            ],
-            "index": "pypi",
-            "version": "==2.3.1"
-        },
-        "pyparsing": {
-            "hashes": [
-                "sha256:1873c03321fc118f4e9746baf201ff990ceb915f433f23b395f5580d1840cb2a",
-                "sha256:9b6323ef4ab914af344ba97510e966d64ba91055d6b9afa6b30799340e89cc03"
-            ],
-            "version": "==2.4.0"
-        },
-        "pytest": {
-            "hashes": [
-                "sha256:6ef6d06de77ce2961156013e9dff62f1b2688aa04d0dc244299fe7d67e09370d",
-                "sha256:a736fed91c12681a7b34617c8fcefe39ea04599ca72c608751c31d89579a3f77"
-            ],
-            "index": "pypi",
-            "version": "==5.0.1"
-        },
-        "pyyaml": {
-            "hashes": [
-                "sha256:57acc1d8533cbe51f6662a55434f0dbecfa2b9eaf115bede8f6fd00115a0c0d3",
-                "sha256:588c94b3d16b76cfed8e0be54932e5729cc185caffaa5a451e7ad2f7ed8b4043",
-                "sha256:68c8dd247f29f9a0d09375c9c6b8fdc64b60810ebf07ba4cdd64ceee3a58c7b7",
-                "sha256:70d9818f1c9cd5c48bb87804f2efc8692f1023dac7f1a1a5c61d454043c1d265",
-                "sha256:86a93cccd50f8c125286e637328ff4eef108400dd7089b46a7be3445eecfa391",
-                "sha256:a0f329125a926876f647c9fa0ef32801587a12328b4a3c741270464e3e4fa778",
-                "sha256:a3c252ab0fa1bb0d5a3f6449a4826732f3eb6c0270925548cac342bc9b22c225",
-                "sha256:b4bb4d3f5e232425e25dda21c070ce05168a786ac9eda43768ab7f3ac2770955",
-                "sha256:cd0618c5ba5bda5f4039b9398bb7fb6a317bb8298218c3de25c47c4740e4b95e",
-                "sha256:ceacb9e5f8474dcf45b940578591c7f3d960e82f926c707788a570b51ba59190",
-                "sha256:fe6a88094b64132c4bb3b631412e90032e8cfe9745a58370462240b8cb7553cd"
-            ],
-            "index": "pypi",
-            "version": "==5.1.1"
-        },
-        "six": {
-            "hashes": [
-                "sha256:3350809f0555b11f552448330d0b52d5f24c91a322ea4a15ef22629740f3761c",
-                "sha256:d16a0141ec1a18405cd4ce8b4613101da75da0e9a7aec5bdd4fa804d0e0eba73"
-            ],
-            "version": "==1.12.0"
-        },
-        "snowballstemmer": {
-            "hashes": [
-                "sha256:9f3b9ffe0809d174f7047e121431acf99c89a7040f0ca84f94ba53a498e6d0c9"
-            ],
-            "version": "==1.9.0"
-        },
-        "toml": {
-            "hashes": [
-                "sha256:229f81c57791a41d65e399fc06bf0848bab550a9dfd5ed66df18ce5f05e73d5c",
-                "sha256:235682dd292d5899d361a811df37e04a8828a5b1da3115886b73cf81ebc9100e"
-            ],
-            "version": "==0.10.0"
-        },
-        "tox": {
-            "hashes": [
-                "sha256:dab0b0160dd187b654fc33d690ee1d7bf328bd5b8dc6ef3bb3cc468969c659ba",
-                "sha256:ee35ffce74933a6c6ac10c9a0182e41763140a5a5070e21b114feca56eaccdcd"
-            ],
-            "index": "pypi",
-            "version": "==3.13.2"
-        },
-        "typed-ast": {
-            "hashes": [
-                "sha256:18511a0b3e7922276346bcb47e2ef9f38fb90fd31cb9223eed42c85d1312344e",
-                "sha256:262c247a82d005e43b5b7f69aff746370538e176131c32dda9cb0f324d27141e",
-                "sha256:2b907eb046d049bcd9892e3076c7a6456c93a25bebfe554e931620c90e6a25b0",
-                "sha256:354c16e5babd09f5cb0ee000d54cfa38401d8b8891eefa878ac772f827181a3c",
-                "sha256:4e0b70c6fc4d010f8107726af5fd37921b666f5b31d9331f0bd24ad9a088e631",
-                "sha256:630968c5cdee51a11c05a30453f8cd65e0cc1d2ad0d9192819df9978984529f4",
-                "sha256:66480f95b8167c9c5c5c87f32cf437d585937970f3fc24386f313a4c97b44e34",
-                "sha256:71211d26ffd12d63a83e079ff258ac9d56a1376a25bc80b1cdcdf601b855b90b",
-                "sha256:95bd11af7eafc16e829af2d3df510cecfd4387f6453355188342c3e79a2ec87a",
-                "sha256:bc6c7d3fa1325a0c6613512a093bc2a2a15aeec350451cbdf9e1d4bffe3e3233",
-                "sha256:cc34a6f5b426748a507dd5d1de4c1978f2eb5626d51326e43280941206c209e1",
-                "sha256:d755f03c1e4a51e9b24d899561fec4ccaf51f210d52abdf8c07ee2849b212a36",
-                "sha256:d7c45933b1bdfaf9f36c579671fec15d25b06c8398f113dab64c18ed1adda01d",
-                "sha256:d896919306dd0aa22d0132f62a1b78d11aaf4c9fc5b3410d3c666b818191630a",
-                "sha256:ffde2fbfad571af120fcbfbbc61c72469e72f550d676c3342492a9dfdefb8f12"
-            ],
-            "markers": "implementation_name == 'cpython'",
-            "version": "==1.4.0"
-        },
-        "virtualenv": {
-            "hashes": [
-                "sha256:861bbce3a418110346c70f5c7a696fdcf23a261424e1d28aa4f9362fc2ccbc19",
-                "sha256:ba8ce6a961d842320681fb90a3d564d0e5134f41dacd0e2bae7f02441dde2d52"
-            ],
-            "version": "==16.6.2"
-        },
-        "wcwidth": {
-            "hashes": [
-                "sha256:3df37372226d6e63e1b1e1eda15c594bca98a22d33a23832a90998faa96bc65e",
-                "sha256:f4ebe71925af7b40a864553f761ed559b43544f8f71746c2d756c7fe788ade7c"
-            ],
-            "version": "==0.1.7"
-        },
-        "wrapt": {
-            "hashes": [
-                "sha256:565a021fd19419476b9362b05eeaa094178de64f8361e44468f9e9d7843901e1"
-            ],
-            "version": "==1.11.2"
-        },
-        "zipp": {
-            "hashes": [
-                "sha256:4970c3758f4e89a7857a973b1e2a5d75bcdc47794442f2e2dd4fe8e0466e809a",
-                "sha256:8a5712cfd3bb4248015eb3b0b3c54a5f6ee3f2425963ef2a0125b8bc40aafaec"
-            ],
-            "version": "==0.5.2"
-        }
-    }
-}
diff --git a/README.md b/README.md
index 56c63d4..574b534 100644
--- a/README.md
+++ b/README.md
@@ -38,4 +38,4 @@ hs_ed25519_public_key:
 PT0gZWQyNTUxOXYxLXB1YmxpYzogdHlwZTAgPT0AAAAOA7Co9kaEIMRTlBTrCU+qtzcrfjEGPJuL0z2G+ZG3tQ==
 ```
 
-(more doc soon, I'm tired right mow ~)
+(more doc soon, I'm tired right now ~)
diff --git a/poetry.lock b/poetry.lock
new file mode 100644
index 0000000..f034f6b
--- /dev/null
+++ b/poetry.lock
@@ -0,0 +1,949 @@
+[[package]]
+category = "dev"
+description = "A small Python module for determining appropriate platform-specific dirs, e.g. a \"user data dir\"."
+name = "appdirs"
+optional = false
+python-versions = "*"
+version = "1.4.4"
+
+[[package]]
+category = "dev"
+description = "An abstract syntax tree for Python with inference support."
+name = "astroid"
+optional = false
+python-versions = ">=3.5"
+version = "2.4.2"
+
+[package.dependencies]
+lazy-object-proxy = ">=1.4.0,<1.5.0"
+six = ">=1.12,<2.0"
+wrapt = ">=1.11,<2.0"
+
+[package.dependencies.typed-ast]
+python = "<3.8"
+version = ">=1.4.0,<1.5"
+
+[[package]]
+category = "dev"
+description = "Atomic file writes."
+marker = "sys_platform == \"win32\""
+name = "atomicwrites"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "1.4.0"
+
+[[package]]
+category = "dev"
+description = "Classes Without Boilerplate"
+name = "attrs"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "20.3.0"
+
+[package.extras]
+dev = ["coverage (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface", "furo", "sphinx", "pre-commit"]
+docs = ["furo", "sphinx", "zope.interface"]
+tests = ["coverage (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface"]
+tests_no_zope = ["coverage (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six"]
+
+[[package]]
+category = "dev"
+description = "The uncompromising code formatter."
+name = "black"
+optional = false
+python-versions = ">=3.6"
+version = "20.8b1"
+
+[package.dependencies]
+appdirs = "*"
+click = ">=7.1.2"
+mypy-extensions = ">=0.4.3"
+pathspec = ">=0.6,<1"
+regex = ">=2020.1.8"
+toml = ">=0.10.1"
+typed-ast = ">=1.4.0"
+typing-extensions = ">=3.7.4"
+
+[package.extras]
+colorama = ["colorama (>=0.4.3)"]
+d = ["aiohttp (>=3.3.2)", "aiohttp-cors"]
+
+[[package]]
+category = "dev"
+description = "Validate configuration and produce human readable error messages."
+name = "cfgv"
+optional = false
+python-versions = ">=3.6.1"
+version = "3.2.0"
+
+[[package]]
+category = "dev"
+description = "Composable command line interface toolkit"
+name = "click"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+version = "7.1.2"
+
+[[package]]
+category = "dev"
+description = "Cross-platform colored terminal text."
+marker = "platform_system == \"Windows\" or sys_platform == \"win32\""
+name = "colorama"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+version = "0.4.4"
+
+[[package]]
+category = "dev"
+description = "Distribution utilities"
+name = "distlib"
+optional = false
+python-versions = "*"
+version = "0.3.1"
+
+[[package]]
+category = "dev"
+description = "A platform independent file lock."
+name = "filelock"
+optional = false
+python-versions = "*"
+version = "3.0.12"
+
+[[package]]
+category = "main"
+description = "A library for automatically generating command line interfaces."
+name = "fire"
+optional = false
+python-versions = "*"
+version = "0.3.1"
+
+[package.dependencies]
+six = "*"
+termcolor = "*"
+
+[[package]]
+category = "dev"
+description = "File identification library for Python"
+name = "identify"
+optional = false
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,>=2.7"
+version = "1.5.9"
+
+[package.extras]
+license = ["editdistance"]
+
+[[package]]
+category = "dev"
+description = "Read metadata from Python packages"
+marker = "python_version < \"3.8\""
+name = "importlib-metadata"
+optional = false
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
+version = "2.0.0"
+
+[package.dependencies]
+zipp = ">=0.5"
+
+[package.extras]
+docs = ["sphinx", "rst.linker"]
+testing = ["packaging", "pep517", "importlib-resources (>=1.3)"]
+
+[[package]]
+category = "dev"
+description = "iniconfig: brain-dead simple config-ini parsing"
+name = "iniconfig"
+optional = false
+python-versions = "*"
+version = "1.1.1"
+
+[[package]]
+category = "dev"
+description = "A Python utility / library to sort Python imports."
+name = "isort"
+optional = false
+python-versions = ">=3.6,<4.0"
+version = "5.6.4"
+
+[package.extras]
+colors = ["colorama (>=0.4.3,<0.5.0)"]
+pipfile_deprecated_finder = ["pipreqs", "requirementslib"]
+requirements_deprecated_finder = ["pipreqs", "pip-api"]
+
+[[package]]
+category = "dev"
+description = "An autocompletion tool for Python that can be used for text editors."
+name = "jedi"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+version = "0.17.2"
+
+[package.dependencies]
+parso = ">=0.7.0,<0.8.0"
+
+[package.extras]
+qa = ["flake8 (3.7.9)"]
+testing = ["Django (<3.1)", "colorama", "docopt", "pytest (>=3.9.0,<5.0.0)"]
+
+[[package]]
+category = "dev"
+description = "A fast and thorough lazy object proxy."
+name = "lazy-object-proxy"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "1.4.3"
+
+[[package]]
+category = "dev"
+description = "McCabe checker, plugin for flake8"
+name = "mccabe"
+optional = false
+python-versions = "*"
+version = "0.6.1"
+
+[[package]]
+category = "dev"
+description = "Experimental type system extensions for programs checked with the mypy typechecker."
+name = "mypy-extensions"
+optional = false
+python-versions = "*"
+version = "0.4.3"
+
+[[package]]
+category = "dev"
+description = "Node.js virtual environment builder"
+name = "nodeenv"
+optional = false
+python-versions = "*"
+version = "1.5.0"
+
+[[package]]
+category = "dev"
+description = "NumPy is the fundamental package for array computing with Python."
+name = "numpy"
+optional = false
+python-versions = ">=3.6"
+version = "1.19.4"
+
+[[package]]
+category = "dev"
+description = "Core utilities for Python packages"
+name = "packaging"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "20.4"
+
+[package.dependencies]
+pyparsing = ">=2.0.2"
+six = "*"
+
+[[package]]
+category = "dev"
+description = "A Python Parser"
+name = "parso"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "0.7.1"
+
+[package.extras]
+testing = ["docopt", "pytest (>=3.0.7)"]
+
+[[package]]
+category = "dev"
+description = "Utility library for gitignore style pattern matching of file paths."
+name = "pathspec"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+version = "0.8.1"
+
+[[package]]
+category = "dev"
+description = "plugin and hook calling mechanisms for python"
+name = "pluggy"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "0.13.1"
+
+[package.dependencies]
+[package.dependencies.importlib-metadata]
+python = "<3.8"
+version = ">=0.12"
+
+[package.extras]
+dev = ["pre-commit", "tox"]
+
+[[package]]
+category = "dev"
+description = "A framework for managing and maintaining multi-language pre-commit hooks."
+name = "pre-commit"
+optional = false
+python-versions = ">=3.6.1"
+version = "2.8.2"
+
+[package.dependencies]
+cfgv = ">=2.0.0"
+identify = ">=1.0.0"
+nodeenv = ">=0.11.1"
+pyyaml = ">=5.1"
+toml = "*"
+virtualenv = ">=20.0.8"
+
+[package.dependencies.importlib-metadata]
+python = "<3.8"
+version = "*"
+
+[[package]]
+category = "dev"
+description = "Library for building powerful interactive command lines in Python"
+name = "prompt-toolkit"
+optional = false
+python-versions = ">=3.6.1"
+version = "3.0.8"
+
+[package.dependencies]
+wcwidth = "*"
+
+[[package]]
+category = "dev"
+description = "Python REPL build on top of prompt_toolkit"
+name = "ptpython"
+optional = false
+python-versions = ">=3.6"
+version = "3.0.7"
+
+[package.dependencies]
+appdirs = "*"
+jedi = ">=0.9.0"
+prompt-toolkit = ">=3.0.0,<3.1.0"
+pygments = "*"
+
+[package.dependencies.importlib-metadata]
+python = "<3.8"
+version = "*"
+
+[package.extras]
+ptipython = ["ipython"]
+
+[[package]]
+category = "dev"
+description = "library with cross-python path, ini-parsing, io, code, log facilities"
+name = "py"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "1.9.0"
+
+[[package]]
+category = "dev"
+description = "Python style guide checker"
+name = "pycodestyle"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "2.6.0"
+
+[[package]]
+category = "main"
+description = "Cryptographic library for Python"
+name = "pycryptodome"
+optional = false
+python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "3.9.9"
+
+[[package]]
+category = "dev"
+description = "Python docstring style checker"
+name = "pydocstyle"
+optional = false
+python-versions = ">=3.5"
+version = "5.1.1"
+
+[package.dependencies]
+snowballstemmer = "*"
+
+[[package]]
+category = "dev"
+description = "pyfakefs implements a fake file system that mocks the Python file system modules."
+name = "pyfakefs"
+optional = false
+python-versions = ">=3.5"
+version = "4.3.0"
+
+[[package]]
+category = "dev"
+description = "passive checker of Python programs"
+name = "pyflakes"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "2.2.0"
+
+[[package]]
+category = "dev"
+description = "Pygments is a syntax highlighting package written in Python."
+name = "pygments"
+optional = false
+python-versions = ">=3.5"
+version = "2.7.2"
+
+[[package]]
+category = "dev"
+description = "pylama -- Code audit tool for python"
+name = "pylama"
+optional = false
+python-versions = "*"
+version = "7.7.1"
+
+[package.dependencies]
+mccabe = ">=0.5.2"
+pycodestyle = ">=2.3.1"
+pydocstyle = ">=2.0.0"
+pyflakes = ">=1.5.0"
+
+[[package]]
+category = "dev"
+description = "python code static checker"
+name = "pylint"
+optional = false
+python-versions = ">=3.5.*"
+version = "2.6.0"
+
+[package.dependencies]
+astroid = ">=2.4.0,<=2.5"
+colorama = "*"
+isort = ">=4.2.5,<6"
+mccabe = ">=0.6,<0.7"
+toml = ">=0.7.1"
+
+[[package]]
+category = "dev"
+description = "Python parsing module"
+name = "pyparsing"
+optional = false
+python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
+version = "2.4.7"
+
+[[package]]
+category = "dev"
+description = "pytest: simple powerful testing with Python"
+name = "pytest"
+optional = false
+python-versions = ">=3.5"
+version = "6.1.2"
+
+[package.dependencies]
+atomicwrites = ">=1.0"
+attrs = ">=17.4.0"
+colorama = "*"
+iniconfig = "*"
+packaging = "*"
+pluggy = ">=0.12,<1.0"
+py = ">=1.8.2"
+toml = "*"
+
+[package.dependencies.importlib-metadata]
+python = "<3.8"
+version = ">=0.12"
+
+[package.extras]
+checkqa_mypy = ["mypy (0.780)"]
+testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "requests", "xmlschema"]
+
+[[package]]
+category = "main"
+description = "YAML parser and emitter for Python"
+name = "pyyaml"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+version = "5.3.1"
+
+[[package]]
+category = "dev"
+description = "Alternative regular expression module, to replace re."
+name = "regex"
+optional = false
+python-versions = "*"
+version = "2020.11.13"
+
+[[package]]
+category = "main"
+description = "Python 2 and 3 compatibility utilities"
+name = "six"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*"
+version = "1.15.0"
+
+[[package]]
+category = "dev"
+description = "This package provides 26 stemmers for 25 languages generated from Snowball algorithms."
+name = "snowballstemmer"
+optional = false
+python-versions = "*"
+version = "2.0.0"
+
+[[package]]
+category = "main"
+description = "ANSII Color formatting for output in terminal."
+name = "termcolor"
+optional = false
+python-versions = "*"
+version = "1.1.0"
+
+[[package]]
+category = "dev"
+description = "Python Library for Tom's Obvious, Minimal Language"
+name = "toml"
+optional = false
+python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
+version = "0.10.2"
+
+[[package]]
+category = "dev"
+description = "tox is a generic virtualenv management and test command line tool"
+name = "tox"
+optional = false
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
+version = "3.20.1"
+
+[package.dependencies]
+colorama = ">=0.4.1"
+filelock = ">=3.0.0"
+packaging = ">=14"
+pluggy = ">=0.12.0"
+py = ">=1.4.17"
+six = ">=1.14.0"
+toml = ">=0.9.4"
+virtualenv = ">=16.0.0,<20.0.0 || >20.0.0,<20.0.1 || >20.0.1,<20.0.2 || >20.0.2,<20.0.3 || >20.0.3,<20.0.4 || >20.0.4,<20.0.5 || >20.0.5,<20.0.6 || >20.0.6,<20.0.7 || >20.0.7"
+
+[package.dependencies.importlib-metadata]
+python = "<3.8"
+version = ">=0.12,<3"
+
+[package.extras]
+docs = ["pygments-github-lexers (>=0.0.5)", "sphinx (>=2.0.0)", "sphinxcontrib-autoprogram (>=0.1.5)", "towncrier (>=18.5.0)"]
+testing = ["flaky (>=3.4.0)", "freezegun (>=0.3.11)", "pathlib2 (>=2.3.3)", "psutil (>=5.6.1)", "pytest (>=4.0.0)", "pytest-cov (>=2.5.1)", "pytest-mock (>=1.10.0)", "pytest-randomly (>=1.0.0)", "pytest-xdist (>=1.22.2)"]
+
+[[package]]
+category = "dev"
+description = "a fork of Python 2 and 3 ast modules with type comment support"
+name = "typed-ast"
+optional = false
+python-versions = "*"
+version = "1.4.1"
+
+[[package]]
+category = "dev"
+description = "Backported and Experimental Type Hints for Python 3.5+"
+name = "typing-extensions"
+optional = false
+python-versions = "*"
+version = "3.7.4.3"
+
+[[package]]
+category = "dev"
+description = "Virtual Python Environment builder"
+name = "virtualenv"
+optional = false
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,>=2.7"
+version = "20.1.0"
+
+[package.dependencies]
+appdirs = ">=1.4.3,<2"
+distlib = ">=0.3.1,<1"
+filelock = ">=3.0.0,<4"
+six = ">=1.9.0,<2"
+
+[package.dependencies.importlib-metadata]
+python = "<3.8"
+version = ">=0.12,<3"
+
+[package.extras]
+docs = ["proselint (>=0.10.2)", "sphinx (>=3)", "sphinx-argparse (>=0.2.5)", "sphinx-rtd-theme (>=0.4.3)", "towncrier (>=19.9.0rc1)"]
+testing = ["coverage (>=4)", "coverage-enable-subprocess (>=1)", "flaky (>=3)", "pytest (>=4)", "pytest-env (>=0.6.2)", "pytest-freezegun (>=0.4.1)", "pytest-mock (>=2)", "pytest-randomly (>=1)", "pytest-timeout (>=1)", "pytest-xdist (>=1.31.0)", "packaging (>=20.0)", "xonsh (>=0.9.16)"]
+
+[[package]]
+category = "dev"
+description = "Measures the displayed width of unicode strings in a terminal"
+name = "wcwidth"
+optional = false
+python-versions = "*"
+version = "0.2.5"
+
+[[package]]
+category = "dev"
+description = "Module for decorators, wrappers and monkey patching."
+name = "wrapt"
+optional = false
+python-versions = "*"
+version = "1.12.1"
+
+[[package]]
+category = "dev"
+description = "Backport of pathlib-compatible object wrapper for zip files"
+marker = "python_version < \"3.8\""
+name = "zipp"
+optional = false
+python-versions = ">=3.6"
+version = "3.4.0"
+
+[package.extras]
+docs = ["sphinx", "jaraco.packaging (>=3.2)", "rst.linker (>=1.9)"]
+testing = ["pytest (>=3.5,<3.7.3 || >3.7.3)", "pytest-checkdocs (>=1.2.3)", "pytest-flake8", "pytest-cov", "jaraco.test (>=3.2.0)", "jaraco.itertools", "func-timeout", "pytest-black (>=0.3.7)", "pytest-mypy"]
+
+[metadata]
+content-hash = "386c9da9cbdb8c839a4d4364ec89e28abadbb9f34b6b625d18e884ce5c79cfce"
+python-versions = ">= 3.7, < 3.9"
+
+[metadata.files]
+appdirs = [
+    {file = "appdirs-1.4.4-py2.py3-none-any.whl", hash = "sha256:a841dacd6b99318a741b166adb07e19ee71a274450e68237b4650ca1055ab128"},
+    {file = "appdirs-1.4.4.tar.gz", hash = "sha256:7d5d0167b2b1ba821647616af46a749d1c653740dd0d2415100fe26e27afdf41"},
+]
+astroid = [
+    {file = "astroid-2.4.2-py3-none-any.whl", hash = "sha256:bc58d83eb610252fd8de6363e39d4f1d0619c894b0ed24603b881c02e64c7386"},
+    {file = "astroid-2.4.2.tar.gz", hash = "sha256:2f4078c2a41bf377eea06d71c9d2ba4eb8f6b1af2135bec27bbbb7d8f12bb703"},
+]
+atomicwrites = [
+    {file = "atomicwrites-1.4.0-py2.py3-none-any.whl", hash = "sha256:6d1784dea7c0c8d4a5172b6c620f40b6e4cbfdf96d783691f2e1302a7b88e197"},
+    {file = "atomicwrites-1.4.0.tar.gz", hash = "sha256:ae70396ad1a434f9c7046fd2dd196fc04b12f9e91ffb859164193be8b6168a7a"},
+]
+attrs = [
+    {file = "attrs-20.3.0-py2.py3-none-any.whl", hash = "sha256:31b2eced602aa8423c2aea9c76a724617ed67cf9513173fd3a4f03e3a929c7e6"},
+    {file = "attrs-20.3.0.tar.gz", hash = "sha256:832aa3cde19744e49938b91fea06d69ecb9e649c93ba974535d08ad92164f700"},
+]
+black = [
+    {file = "black-20.8b1.tar.gz", hash = "sha256:1c02557aa099101b9d21496f8a914e9ed2222ef70336404eeeac8edba836fbea"},
+]
+cfgv = [
+    {file = "cfgv-3.2.0-py2.py3-none-any.whl", hash = "sha256:32e43d604bbe7896fe7c248a9c2276447dbef840feb28fe20494f62af110211d"},
+    {file = "cfgv-3.2.0.tar.gz", hash = "sha256:cf22deb93d4bcf92f345a5c3cd39d3d41d6340adc60c78bbbd6588c384fda6a1"},
+]
+click = [
+    {file = "click-7.1.2-py2.py3-none-any.whl", hash = "sha256:dacca89f4bfadd5de3d7489b7c8a566eee0d3676333fbb50030263894c38c0dc"},
+    {file = "click-7.1.2.tar.gz", hash = "sha256:d2b5255c7c6349bc1bd1e59e08cd12acbbd63ce649f2588755783aa94dfb6b1a"},
+]
+colorama = [
+    {file = "colorama-0.4.4-py2.py3-none-any.whl", hash = "sha256:9f47eda37229f68eee03b24b9748937c7dc3868f906e8ba69fbcbdd3bc5dc3e2"},
+    {file = "colorama-0.4.4.tar.gz", hash = "sha256:5941b2b48a20143d2267e95b1c2a7603ce057ee39fd88e7329b0c292aa16869b"},
+]
+distlib = [
+    {file = "distlib-0.3.1-py2.py3-none-any.whl", hash = "sha256:8c09de2c67b3e7deef7184574fc060ab8a793e7adbb183d942c389c8b13c52fb"},
+    {file = "distlib-0.3.1.zip", hash = "sha256:edf6116872c863e1aa9d5bb7cb5e05a022c519a4594dc703843343a9ddd9bff1"},
+]
+filelock = [
+    {file = "filelock-3.0.12-py3-none-any.whl", hash = "sha256:929b7d63ec5b7d6b71b0fa5ac14e030b3f70b75747cef1b10da9b879fef15836"},
+    {file = "filelock-3.0.12.tar.gz", hash = "sha256:18d82244ee114f543149c66a6e0c14e9c4f8a1044b5cdaadd0f82159d6a6ff59"},
+]
+fire = [
+    {file = "fire-0.3.1.tar.gz", hash = "sha256:9736a16227c3d469e5d2d296bce5b4d8fa8d7851e953bda327a455fc2994307f"},
+]
+identify = [
+    {file = "identify-1.5.9-py2.py3-none-any.whl", hash = "sha256:5dd84ac64a9a115b8e0b27d1756b244b882ad264c3c423f42af8235a6e71ca12"},
+    {file = "identify-1.5.9.tar.gz", hash = "sha256:c9504ba6a043ee2db0a9d69e43246bc138034895f6338d5aed1b41e4a73b1513"},
+]
+importlib-metadata = [
+    {file = "importlib_metadata-2.0.0-py2.py3-none-any.whl", hash = "sha256:cefa1a2f919b866c5beb7c9f7b0ebb4061f30a8a9bf16d609b000e2dfaceb9c3"},
+    {file = "importlib_metadata-2.0.0.tar.gz", hash = "sha256:77a540690e24b0305878c37ffd421785a6f7e53c8b5720d211b211de8d0e95da"},
+]
+iniconfig = [
+    {file = "iniconfig-1.1.1-py2.py3-none-any.whl", hash = "sha256:011e24c64b7f47f6ebd835bb12a743f2fbe9a26d4cecaa7f53bc4f35ee9da8b3"},
+    {file = "iniconfig-1.1.1.tar.gz", hash = "sha256:bc3af051d7d14b2ee5ef9969666def0cd1a000e121eaea580d4a313df4b37f32"},
+]
+isort = [
+    {file = "isort-5.6.4-py3-none-any.whl", hash = "sha256:dcab1d98b469a12a1a624ead220584391648790275560e1a43e54c5dceae65e7"},
+    {file = "isort-5.6.4.tar.gz", hash = "sha256:dcaeec1b5f0eca77faea2a35ab790b4f3680ff75590bfcb7145986905aab2f58"},
+]
+jedi = [
+    {file = "jedi-0.17.2-py2.py3-none-any.whl", hash = "sha256:98cc583fa0f2f8304968199b01b6b4b94f469a1f4a74c1560506ca2a211378b5"},
+    {file = "jedi-0.17.2.tar.gz", hash = "sha256:86ed7d9b750603e4ba582ea8edc678657fb4007894a12bcf6f4bb97892f31d20"},
+]
+lazy-object-proxy = [
+    {file = "lazy-object-proxy-1.4.3.tar.gz", hash = "sha256:f3900e8a5de27447acbf900b4750b0ddfd7ec1ea7fbaf11dfa911141bc522af0"},
+    {file = "lazy_object_proxy-1.4.3-cp27-cp27m-macosx_10_13_x86_64.whl", hash = "sha256:a2238e9d1bb71a56cd710611a1614d1194dc10a175c1e08d75e1a7bcc250d442"},
+    {file = "lazy_object_proxy-1.4.3-cp27-cp27m-win32.whl", hash = "sha256:efa1909120ce98bbb3777e8b6f92237f5d5c8ea6758efea36a473e1d38f7d3e4"},
+    {file = "lazy_object_proxy-1.4.3-cp27-cp27m-win_amd64.whl", hash = "sha256:4677f594e474c91da97f489fea5b7daa17b5517190899cf213697e48d3902f5a"},
+    {file = "lazy_object_proxy-1.4.3-cp27-cp27mu-manylinux1_x86_64.whl", hash = "sha256:0c4b206227a8097f05c4dbdd323c50edf81f15db3b8dc064d08c62d37e1a504d"},
+    {file = "lazy_object_proxy-1.4.3-cp34-cp34m-manylinux1_x86_64.whl", hash = "sha256:d945239a5639b3ff35b70a88c5f2f491913eb94871780ebfabb2568bd58afc5a"},
+    {file = "lazy_object_proxy-1.4.3-cp34-cp34m-win32.whl", hash = "sha256:9651375199045a358eb6741df3e02a651e0330be090b3bc79f6d0de31a80ec3e"},
+    {file = "lazy_object_proxy-1.4.3-cp34-cp34m-win_amd64.whl", hash = "sha256:eba7011090323c1dadf18b3b689845fd96a61ba0a1dfbd7f24b921398affc357"},
+    {file = "lazy_object_proxy-1.4.3-cp35-cp35m-manylinux1_x86_64.whl", hash = "sha256:48dab84ebd4831077b150572aec802f303117c8cc5c871e182447281ebf3ac50"},
+    {file = "lazy_object_proxy-1.4.3-cp35-cp35m-win32.whl", hash = "sha256:ca0a928a3ddbc5725be2dd1cf895ec0a254798915fb3a36af0964a0a4149e3db"},
+    {file = "lazy_object_proxy-1.4.3-cp35-cp35m-win_amd64.whl", hash = "sha256:194d092e6f246b906e8f70884e620e459fc54db3259e60cf69a4d66c3fda3449"},
+    {file = "lazy_object_proxy-1.4.3-cp36-cp36m-manylinux1_x86_64.whl", hash = "sha256:97bb5884f6f1cdce0099f86b907aa41c970c3c672ac8b9c8352789e103cf3156"},
+    {file = "lazy_object_proxy-1.4.3-cp36-cp36m-win32.whl", hash = "sha256:cb2c7c57005a6804ab66f106ceb8482da55f5314b7fcb06551db1edae4ad1531"},
+    {file = "lazy_object_proxy-1.4.3-cp36-cp36m-win_amd64.whl", hash = "sha256:8d859b89baf8ef7f8bc6b00aa20316483d67f0b1cbf422f5b4dc56701c8f2ffb"},
+    {file = "lazy_object_proxy-1.4.3-cp37-cp37m-macosx_10_13_x86_64.whl", hash = "sha256:1be7e4c9f96948003609aa6c974ae59830a6baecc5376c25c92d7d697e684c08"},
+    {file = "lazy_object_proxy-1.4.3-cp37-cp37m-manylinux1_x86_64.whl", hash = "sha256:d74bb8693bf9cf75ac3b47a54d716bbb1a92648d5f781fc799347cfc95952383"},
+    {file = "lazy_object_proxy-1.4.3-cp37-cp37m-win32.whl", hash = "sha256:9b15f3f4c0f35727d3a0fba4b770b3c4ebbb1fa907dbcc046a1d2799f3edd142"},
+    {file = "lazy_object_proxy-1.4.3-cp37-cp37m-win_amd64.whl", hash = "sha256:9254f4358b9b541e3441b007a0ea0764b9d056afdeafc1a5569eee1cc6c1b9ea"},
+    {file = "lazy_object_proxy-1.4.3-cp38-cp38-manylinux1_x86_64.whl", hash = "sha256:a6ae12d08c0bf9909ce12385803a543bfe99b95fe01e752536a60af2b7797c62"},
+    {file = "lazy_object_proxy-1.4.3-cp38-cp38-win32.whl", hash = "sha256:5541cada25cd173702dbd99f8e22434105456314462326f06dba3e180f203dfd"},
+    {file = "lazy_object_proxy-1.4.3-cp38-cp38-win_amd64.whl", hash = "sha256:59f79fef100b09564bc2df42ea2d8d21a64fdcda64979c0fa3db7bdaabaf6239"},
+]
+mccabe = [
+    {file = "mccabe-0.6.1-py2.py3-none-any.whl", hash = "sha256:ab8a6258860da4b6677da4bd2fe5dc2c659cff31b3ee4f7f5d64e79735b80d42"},
+    {file = "mccabe-0.6.1.tar.gz", hash = "sha256:dd8d182285a0fe56bace7f45b5e7d1a6ebcbf524e8f3bd87eb0f125271b8831f"},
+]
+mypy-extensions = [
+    {file = "mypy_extensions-0.4.3-py2.py3-none-any.whl", hash = "sha256:090fedd75945a69ae91ce1303b5824f428daf5a028d2f6ab8a299250a846f15d"},
+    {file = "mypy_extensions-0.4.3.tar.gz", hash = "sha256:2d82818f5bb3e369420cb3c4060a7970edba416647068eb4c5343488a6c604a8"},
+]
+nodeenv = [
+    {file = "nodeenv-1.5.0-py2.py3-none-any.whl", hash = "sha256:5304d424c529c997bc888453aeaa6362d242b6b4631e90f3d4bf1b290f1c84a9"},
+    {file = "nodeenv-1.5.0.tar.gz", hash = "sha256:ab45090ae383b716c4ef89e690c41ff8c2b257b85b309f01f3654df3d084bd7c"},
+]
+numpy = [
+    {file = "numpy-1.19.4-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:e9b30d4bd69498fc0c3fe9db5f62fffbb06b8eb9321f92cc970f2969be5e3949"},
+    {file = "numpy-1.19.4-cp36-cp36m-manylinux1_i686.whl", hash = "sha256:fedbd128668ead37f33917820b704784aff695e0019309ad446a6d0b065b57e4"},
+    {file = "numpy-1.19.4-cp36-cp36m-manylinux1_x86_64.whl", hash = "sha256:8ece138c3a16db8c1ad38f52eb32be6086cc72f403150a79336eb2045723a1ad"},
+    {file = "numpy-1.19.4-cp36-cp36m-manylinux2010_i686.whl", hash = "sha256:64324f64f90a9e4ef732be0928be853eee378fd6a01be21a0a8469c4f2682c83"},
+    {file = "numpy-1.19.4-cp36-cp36m-manylinux2010_x86_64.whl", hash = "sha256:ad6f2ff5b1989a4899bf89800a671d71b1612e5ff40866d1f4d8bcf48d4e5764"},
+    {file = "numpy-1.19.4-cp36-cp36m-manylinux2014_aarch64.whl", hash = "sha256:d6c7bb82883680e168b55b49c70af29b84b84abb161cbac2800e8fcb6f2109b6"},
+    {file = "numpy-1.19.4-cp36-cp36m-win32.whl", hash = "sha256:13d166f77d6dc02c0a73c1101dd87fdf01339febec1030bd810dcd53fff3b0f1"},
+    {file = "numpy-1.19.4-cp36-cp36m-win_amd64.whl", hash = "sha256:448ebb1b3bf64c0267d6b09a7cba26b5ae61b6d2dbabff7c91b660c7eccf2bdb"},
+    {file = "numpy-1.19.4-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:27d3f3b9e3406579a8af3a9f262f5339005dd25e0ecf3cf1559ff8a49ed5cbf2"},
+    {file = "numpy-1.19.4-cp37-cp37m-manylinux1_i686.whl", hash = "sha256:16c1b388cc31a9baa06d91a19366fb99ddbe1c7b205293ed072211ee5bac1ed2"},
+    {file = "numpy-1.19.4-cp37-cp37m-manylinux1_x86_64.whl", hash = "sha256:e5b6ed0f0b42317050c88022349d994fe72bfe35f5908617512cd8c8ef9da2a9"},
+    {file = "numpy-1.19.4-cp37-cp37m-manylinux2010_i686.whl", hash = "sha256:18bed2bcb39e3f758296584337966e68d2d5ba6aab7e038688ad53c8f889f757"},
+    {file = "numpy-1.19.4-cp37-cp37m-manylinux2010_x86_64.whl", hash = "sha256:fe45becb4c2f72a0907c1d0246ea6449fe7a9e2293bb0e11c4e9a32bb0930a15"},
+    {file = "numpy-1.19.4-cp37-cp37m-manylinux2014_aarch64.whl", hash = "sha256:6d7593a705d662be5bfe24111af14763016765f43cb6923ed86223f965f52387"},
+    {file = "numpy-1.19.4-cp37-cp37m-win32.whl", hash = "sha256:6ae6c680f3ebf1cf7ad1d7748868b39d9f900836df774c453c11c5440bc15b36"},
+    {file = "numpy-1.19.4-cp37-cp37m-win_amd64.whl", hash = "sha256:9eeb7d1d04b117ac0d38719915ae169aa6b61fca227b0b7d198d43728f0c879c"},
+    {file = "numpy-1.19.4-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:cb1017eec5257e9ac6209ac172058c430e834d5d2bc21961dceeb79d111e5909"},
+    {file = "numpy-1.19.4-cp38-cp38-manylinux1_i686.whl", hash = "sha256:edb01671b3caae1ca00881686003d16c2209e07b7ef8b7639f1867852b948f7c"},
+    {file = "numpy-1.19.4-cp38-cp38-manylinux1_x86_64.whl", hash = "sha256:f29454410db6ef8126c83bd3c968d143304633d45dc57b51252afbd79d700893"},
+    {file = "numpy-1.19.4-cp38-cp38-manylinux2010_i686.whl", hash = "sha256:ec149b90019852266fec2341ce1db513b843e496d5a8e8cdb5ced1923a92faab"},
+    {file = "numpy-1.19.4-cp38-cp38-manylinux2010_x86_64.whl", hash = "sha256:1aeef46a13e51931c0b1cf8ae1168b4a55ecd282e6688fdb0a948cc5a1d5afb9"},
+    {file = "numpy-1.19.4-cp38-cp38-manylinux2014_aarch64.whl", hash = "sha256:08308c38e44cc926bdfce99498b21eec1f848d24c302519e64203a8da99a97db"},
+    {file = "numpy-1.19.4-cp38-cp38-win32.whl", hash = "sha256:5734bdc0342aba9dfc6f04920988140fb41234db42381cf7ccba64169f9fe7ac"},
+    {file = "numpy-1.19.4-cp38-cp38-win_amd64.whl", hash = "sha256:09c12096d843b90eafd01ea1b3307e78ddd47a55855ad402b157b6c4862197ce"},
+    {file = "numpy-1.19.4-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:e452dc66e08a4ce642a961f134814258a082832c78c90351b75c41ad16f79f63"},
+    {file = "numpy-1.19.4-cp39-cp39-manylinux1_i686.whl", hash = "sha256:a5d897c14513590a85774180be713f692df6fa8ecf6483e561a6d47309566f37"},
+    {file = "numpy-1.19.4-cp39-cp39-manylinux1_x86_64.whl", hash = "sha256:a09f98011236a419ee3f49cedc9ef27d7a1651df07810ae430a6b06576e0b414"},
+    {file = "numpy-1.19.4-cp39-cp39-manylinux2010_i686.whl", hash = "sha256:50e86c076611212ca62e5a59f518edafe0c0730f7d9195fec718da1a5c2bb1fc"},
+    {file = "numpy-1.19.4-cp39-cp39-manylinux2010_x86_64.whl", hash = "sha256:f0d3929fe88ee1c155129ecd82f981b8856c5d97bcb0d5f23e9b4242e79d1de3"},
+    {file = "numpy-1.19.4-cp39-cp39-manylinux2014_aarch64.whl", hash = "sha256:c42c4b73121caf0ed6cd795512c9c09c52a7287b04d105d112068c1736d7c753"},
+    {file = "numpy-1.19.4-cp39-cp39-win32.whl", hash = "sha256:8cac8790a6b1ddf88640a9267ee67b1aee7a57dfa2d2dd33999d080bc8ee3a0f"},
+    {file = "numpy-1.19.4-cp39-cp39-win_amd64.whl", hash = "sha256:4377e10b874e653fe96985c05feed2225c912e328c8a26541f7fc600fb9c637b"},
+    {file = "numpy-1.19.4-pp36-pypy36_pp73-manylinux2010_x86_64.whl", hash = "sha256:2a2740aa9733d2e5b2dfb33639d98a64c3b0f24765fed86b0fd2aec07f6a0a08"},
+    {file = "numpy-1.19.4.zip", hash = "sha256:141ec3a3300ab89c7f2b0775289954d193cc8edb621ea05f99db9cb181530512"},
+]
+packaging = [
+    {file = "packaging-20.4-py2.py3-none-any.whl", hash = "sha256:998416ba6962ae7fbd6596850b80e17859a5753ba17c32284f67bfff33784181"},
+    {file = "packaging-20.4.tar.gz", hash = "sha256:4357f74f47b9c12db93624a82154e9b120fa8293699949152b22065d556079f8"},
+]
+parso = [
+    {file = "parso-0.7.1-py2.py3-none-any.whl", hash = "sha256:97218d9159b2520ff45eb78028ba8b50d2bc61dcc062a9682666f2dc4bd331ea"},
+    {file = "parso-0.7.1.tar.gz", hash = "sha256:caba44724b994a8a5e086460bb212abc5a8bc46951bf4a9a1210745953622eb9"},
+]
+pathspec = [
+    {file = "pathspec-0.8.1-py2.py3-none-any.whl", hash = "sha256:aa0cb481c4041bf52ffa7b0d8fa6cd3e88a2ca4879c533c9153882ee2556790d"},
+    {file = "pathspec-0.8.1.tar.gz", hash = "sha256:86379d6b86d75816baba717e64b1a3a3469deb93bb76d613c9ce79edc5cb68fd"},
+]
+pluggy = [
+    {file = "pluggy-0.13.1-py2.py3-none-any.whl", hash = "sha256:966c145cd83c96502c3c3868f50408687b38434af77734af1e9ca461a4081d2d"},
+    {file = "pluggy-0.13.1.tar.gz", hash = "sha256:15b2acde666561e1298d71b523007ed7364de07029219b604cf808bfa1c765b0"},
+]
+pre-commit = [
+    {file = "pre_commit-2.8.2-py2.py3-none-any.whl", hash = "sha256:22e6aa3bd571debb01eb7d34483f11c01b65237be4eebbf30c3d4fb65762d315"},
+    {file = "pre_commit-2.8.2.tar.gz", hash = "sha256:905ebc9b534b991baec87e934431f2d0606ba27f2b90f7f652985f5a5b8b6ae6"},
+]
+prompt-toolkit = [
+    {file = "prompt_toolkit-3.0.8-py3-none-any.whl", hash = "sha256:7debb9a521e0b1ee7d2fe96ee4bd60ef03c6492784de0547337ca4433e46aa63"},
+    {file = "prompt_toolkit-3.0.8.tar.gz", hash = "sha256:25c95d2ac813909f813c93fde734b6e44406d1477a9faef7c915ff37d39c0a8c"},
+]
+ptpython = [
+    {file = "ptpython-3.0.7-py2.py3-none-any.whl", hash = "sha256:c40b096c80bd09ebc4012017444cf7281fe5308f6dd7ca6a45ef9250cb271428"},
+    {file = "ptpython-3.0.7.tar.gz", hash = "sha256:34814eb410f854c823be4c4a34124e1dc8ca696da1c1fa611f9da606c5a8a609"},
+]
+py = [
+    {file = "py-1.9.0-py2.py3-none-any.whl", hash = "sha256:366389d1db726cd2fcfc79732e75410e5fe4d31db13692115529d34069a043c2"},
+    {file = "py-1.9.0.tar.gz", hash = "sha256:9ca6883ce56b4e8da7e79ac18787889fa5206c79dcc67fb065376cd2fe03f342"},
+]
+pycodestyle = [
+    {file = "pycodestyle-2.6.0-py2.py3-none-any.whl", hash = "sha256:2295e7b2f6b5bd100585ebcb1f616591b652db8a741695b3d8f5d28bdc934367"},
+    {file = "pycodestyle-2.6.0.tar.gz", hash = "sha256:c58a7d2815e0e8d7972bf1803331fb0152f867bd89adf8a01dfd55085434192e"},
+]
+pycryptodome = [
+    {file = "pycryptodome-3.9.9-cp27-cp27m-macosx_10_6_intel.whl", hash = "sha256:5598dc6c9dbfe882904e54584322893eff185b98960bbe2cdaaa20e8a437b6e5"},
+    {file = "pycryptodome-3.9.9-cp27-cp27m-manylinux1_i686.whl", hash = "sha256:1cfdb92dca388e27e732caa72a1cc624520fe93752a665c3b6cd8f1a91b34916"},
+    {file = "pycryptodome-3.9.9-cp27-cp27m-manylinux1_x86_64.whl", hash = "sha256:5f19e6ef750f677d924d9c7141f54bade3cd56695bbfd8a9ef15d0378557dfe4"},
+    {file = "pycryptodome-3.9.9-cp27-cp27m-win32.whl", hash = "sha256:a3d8a9efa213be8232c59cdc6b65600276508e375e0a119d710826248fd18d37"},
+    {file = "pycryptodome-3.9.9-cp27-cp27m-win_amd64.whl", hash = "sha256:50826b49fbca348a61529693b0031cdb782c39060fb9dca5ac5dff858159dc5a"},
+    {file = "pycryptodome-3.9.9-cp27-cp27mu-manylinux1_i686.whl", hash = "sha256:19cb674df6c74a14b8b408aa30ba8a89bd1c01e23505100fb45f930fbf0ed0d9"},
+    {file = "pycryptodome-3.9.9-cp27-cp27mu-manylinux1_x86_64.whl", hash = "sha256:28f75e58d02019a7edc7d4135203d2501dfc47256d175c72c9798f9a129a49a7"},
+    {file = "pycryptodome-3.9.9-cp35-cp35m-macosx_10_6_intel.whl", hash = "sha256:6d3baaf82681cfb1a842f1c8f77beac791ceedd99af911e4f5fabec32bae2259"},
+    {file = "pycryptodome-3.9.9-cp35-cp35m-manylinux1_i686.whl", hash = "sha256:946399d15eccebafc8ce0257fc4caffe383c75e6b0633509bd011e357368306c"},
+    {file = "pycryptodome-3.9.9-cp35-cp35m-manylinux1_x86_64.whl", hash = "sha256:eb01f9997e4d6a8ec8a1ad1f676ba5a362781ff64e8189fe2985258ba9cb9706"},
+    {file = "pycryptodome-3.9.9-cp35-cp35m-manylinux2014_aarch64.whl", hash = "sha256:411745c6dce4eff918906eebcde78771d44795d747e194462abb120d2e537cd9"},
+    {file = "pycryptodome-3.9.9-cp36-cp36m-macosx_10_6_intel.whl", hash = "sha256:8f9f84059039b672a5a705b3c5aa21747867bacc30a72e28bf0d147cc8ef85ed"},
+    {file = "pycryptodome-3.9.9-cp36-cp36m-manylinux1_i686.whl", hash = "sha256:7798e73225a699651888489fbb1dbc565e03a509942a8ce6194bbe6fb582a41f"},
+    {file = "pycryptodome-3.9.9-cp36-cp36m-manylinux1_x86_64.whl", hash = "sha256:46e96aeb8a9ca8b1edf9b1fd0af4bf6afcf3f1ca7fa35529f5d60b98f3e4e959"},
+    {file = "pycryptodome-3.9.9-cp36-cp36m-manylinux2014_aarch64.whl", hash = "sha256:843e5f10ecdf9d307032b8b91afe9da1d6ed5bb89d0bbec5c8dcb4ba44008e11"},
+    {file = "pycryptodome-3.9.9-cp36-cp36m-win32.whl", hash = "sha256:b68794fba45bdb367eeb71249c26d23e61167510a1d0c3d6cf0f2f14636e62ee"},
+    {file = "pycryptodome-3.9.9-cp36-cp36m-win_amd64.whl", hash = "sha256:60febcf5baf70c566d9d9351c47fbd8321da9a4edf2eff45c4c31c86164ca794"},
+    {file = "pycryptodome-3.9.9-cp37-cp37m-macosx_10_6_intel.whl", hash = "sha256:4ed27951b0a17afd287299e2206a339b5b6d12de9321e1a1575261ef9c4a851b"},
+    {file = "pycryptodome-3.9.9-cp37-cp37m-manylinux1_i686.whl", hash = "sha256:9000877383e2189dafd1b2fc68c6c726eca9a3cfb6d68148fbb72ccf651959b6"},
+    {file = "pycryptodome-3.9.9-cp37-cp37m-manylinux1_x86_64.whl", hash = "sha256:faa682c404c218e8788c3126c9a4b8fbcc54dc245b5b6e8ea5b46f3b63bd0c84"},
+    {file = "pycryptodome-3.9.9-cp37-cp37m-manylinux2014_aarch64.whl", hash = "sha256:62c488a21c253dadc9f731a32f0ac61e4e436d81a1ea6f7d1d9146ed4d20d6bd"},
+    {file = "pycryptodome-3.9.9-cp37-cp37m-win32.whl", hash = "sha256:834b790bbb6bd18956f625af4004d9c15eed12d5186d8e57851454ae76d52215"},
+    {file = "pycryptodome-3.9.9-cp37-cp37m-win_amd64.whl", hash = "sha256:70d807d11d508433daf96244ec1c64e55039e8a35931fc5ea9eee94dbe3cb6b5"},
+    {file = "pycryptodome-3.9.9-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:27397aee992af69d07502126561d851ba3845aa808f0e55c71ad0efa264dd7d4"},
+    {file = "pycryptodome-3.9.9-cp38-cp38-manylinux1_i686.whl", hash = "sha256:d7ec2bd8f57c559dd24e71891c51c25266a8deb66fc5f02cc97c7fb593d1780a"},
+    {file = "pycryptodome-3.9.9-cp38-cp38-manylinux1_x86_64.whl", hash = "sha256:e15bde67ccb7d4417f627dd16ffe2f5a4c2941ce5278444e884cb26d73ecbc61"},
+    {file = "pycryptodome-3.9.9-cp38-cp38-manylinux2014_aarch64.whl", hash = "sha256:5c3c4865730dfb0263f822b966d6d58429d8b1e560d1ddae37685fd9e7c63161"},
+    {file = "pycryptodome-3.9.9-cp38-cp38-win32.whl", hash = "sha256:76b1a34d74bb2c91bce460cdc74d1347592045627a955e9a252554481c17c52f"},
+    {file = "pycryptodome-3.9.9-cp38-cp38-win_amd64.whl", hash = "sha256:6e4227849e4231a3f5b35ea5bdedf9a82b3883500e5624f00a19156e9a9ef861"},
+    {file = "pycryptodome-3.9.9-cp39-cp39-manylinux1_i686.whl", hash = "sha256:2a68df525b387201a43b27b879ce8c08948a430e883a756d6c9e3acdaa7d7bd8"},
+    {file = "pycryptodome-3.9.9-cp39-cp39-manylinux1_x86_64.whl", hash = "sha256:a4599c0ca0fc027c780c1c45ed996d5bef03e571470b7b1c7171ec1e1a90914c"},
+    {file = "pycryptodome-3.9.9-cp39-cp39-manylinux2014_aarch64.whl", hash = "sha256:b4e6b269a8ddaede774e5c3adbef6bf452ee144e6db8a716d23694953348cd86"},
+    {file = "pycryptodome-3.9.9-cp39-cp39-win32.whl", hash = "sha256:a199e9ca46fc6e999e5f47fce342af4b56c7de85fae893c69ab6aa17531fb1e1"},
+    {file = "pycryptodome-3.9.9-cp39-cp39-win_amd64.whl", hash = "sha256:6e89bb3826e6f84501e8e3b205c22595d0c5492c2f271cbb9ee1c48eb1866645"},
+    {file = "pycryptodome-3.9.9.tar.gz", hash = "sha256:910e202a557e1131b1c1b3f17a63914d57aac55cf9fb9b51644962841c3995c4"},
+]
+pydocstyle = [
+    {file = "pydocstyle-5.1.1-py3-none-any.whl", hash = "sha256:aca749e190a01726a4fb472dd4ef23b5c9da7b9205c0a7857c06533de13fd678"},
+    {file = "pydocstyle-5.1.1.tar.gz", hash = "sha256:19b86fa8617ed916776a11cd8bc0197e5b9856d5433b777f51a3defe13075325"},
+]
+pyfakefs = [
+    {file = "pyfakefs-4.3.0-py3-none-any.whl", hash = "sha256:dee4fc0ee691b865077f18a6d11f8fb68002bd8c346b73df259c76774c6604e1"},
+    {file = "pyfakefs-4.3.0.tar.gz", hash = "sha256:4623770fb9994887e883d4193cc6a3746014b4287f94a73e0de04a0aa3c8a56a"},
+]
+pyflakes = [
+    {file = "pyflakes-2.2.0-py2.py3-none-any.whl", hash = "sha256:0d94e0e05a19e57a99444b6ddcf9a6eb2e5c68d3ca1e98e90707af8152c90a92"},
+    {file = "pyflakes-2.2.0.tar.gz", hash = "sha256:35b2d75ee967ea93b55750aa9edbbf72813e06a66ba54438df2cfac9e3c27fc8"},
+]
+pygments = [
+    {file = "Pygments-2.7.2-py3-none-any.whl", hash = "sha256:88a0bbcd659fcb9573703957c6b9cff9fab7295e6e76db54c9d00ae42df32773"},
+    {file = "Pygments-2.7.2.tar.gz", hash = "sha256:381985fcc551eb9d37c52088a32914e00517e57f4a21609f48141ba08e193fa0"},
+]
+pylama = [
+    {file = "pylama-7.7.1-py2.py3-none-any.whl", hash = "sha256:fd61c11872d6256b019ef1235be37b77c922ef37ac9797df6bd489996dddeb15"},
+    {file = "pylama-7.7.1.tar.gz", hash = "sha256:9bae53ef9c1a431371d6a8dca406816a60d547147b60a4934721898f553b7d8f"},
+]
+pylint = [
+    {file = "pylint-2.6.0-py3-none-any.whl", hash = "sha256:bfe68f020f8a0fece830a22dd4d5dddb4ecc6137db04face4c3420a46a52239f"},
+    {file = "pylint-2.6.0.tar.gz", hash = "sha256:bb4a908c9dadbc3aac18860550e870f58e1a02c9f2c204fdf5693d73be061210"},
+]
+pyparsing = [
+    {file = "pyparsing-2.4.7-py2.py3-none-any.whl", hash = "sha256:ef9d7589ef3c200abe66653d3f1ab1033c3c419ae9b9bdb1240a85b024efc88b"},
+    {file = "pyparsing-2.4.7.tar.gz", hash = "sha256:c203ec8783bf771a155b207279b9bccb8dea02d8f0c9e5f8ead507bc3246ecc1"},
+]
+pytest = [
+    {file = "pytest-6.1.2-py3-none-any.whl", hash = "sha256:4288fed0d9153d9646bfcdf0c0428197dba1ecb27a33bb6e031d002fa88653fe"},
+    {file = "pytest-6.1.2.tar.gz", hash = "sha256:c0a7e94a8cdbc5422a51ccdad8e6f1024795939cc89159a0ae7f0b316ad3823e"},
+]
+pyyaml = [
+    {file = "PyYAML-5.3.1-cp27-cp27m-win32.whl", hash = "sha256:74809a57b329d6cc0fdccee6318f44b9b8649961fa73144a98735b0aaf029f1f"},
+    {file = "PyYAML-5.3.1-cp27-cp27m-win_amd64.whl", hash = "sha256:240097ff019d7c70a4922b6869d8a86407758333f02203e0fc6ff79c5dcede76"},
+    {file = "PyYAML-5.3.1-cp35-cp35m-win32.whl", hash = "sha256:4f4b913ca1a7319b33cfb1369e91e50354d6f07a135f3b901aca02aa95940bd2"},
+    {file = "PyYAML-5.3.1-cp35-cp35m-win_amd64.whl", hash = "sha256:cc8955cfbfc7a115fa81d85284ee61147059a753344bc51098f3ccd69b0d7e0c"},
+    {file = "PyYAML-5.3.1-cp36-cp36m-win32.whl", hash = "sha256:7739fc0fa8205b3ee8808aea45e968bc90082c10aef6ea95e855e10abf4a37b2"},
+    {file = "PyYAML-5.3.1-cp36-cp36m-win_amd64.whl", hash = "sha256:69f00dca373f240f842b2931fb2c7e14ddbacd1397d57157a9b005a6a9942648"},
+    {file = "PyYAML-5.3.1-cp37-cp37m-win32.whl", hash = "sha256:d13155f591e6fcc1ec3b30685d50bf0711574e2c0dfffd7644babf8b5102ca1a"},
+    {file = "PyYAML-5.3.1-cp37-cp37m-win_amd64.whl", hash = "sha256:73f099454b799e05e5ab51423c7bcf361c58d3206fa7b0d555426b1f4d9a3eaf"},
+    {file = "PyYAML-5.3.1-cp38-cp38-win32.whl", hash = "sha256:06a0d7ba600ce0b2d2fe2e78453a470b5a6e000a985dd4a4e54e436cc36b0e97"},
+    {file = "PyYAML-5.3.1-cp38-cp38-win_amd64.whl", hash = "sha256:95f71d2af0ff4227885f7a6605c37fd53d3a106fcab511b8860ecca9fcf400ee"},
+    {file = "PyYAML-5.3.1.tar.gz", hash = "sha256:b8eac752c5e14d3eca0e6dd9199cd627518cb5ec06add0de9d32baeee6fe645d"},
+]
+regex = [
+    {file = "regex-2020.11.13-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:8b882a78c320478b12ff024e81dc7d43c1462aa4a3341c754ee65d857a521f85"},
+    {file = "regex-2020.11.13-cp36-cp36m-manylinux1_i686.whl", hash = "sha256:a63f1a07932c9686d2d416fb295ec2c01ab246e89b4d58e5fa468089cab44b70"},
+    {file = "regex-2020.11.13-cp36-cp36m-manylinux1_x86_64.whl", hash = "sha256:6e4b08c6f8daca7d8f07c8d24e4331ae7953333dbd09c648ed6ebd24db5a10ee"},
+    {file = "regex-2020.11.13-cp36-cp36m-manylinux2010_i686.whl", hash = "sha256:bba349276b126947b014e50ab3316c027cac1495992f10e5682dc677b3dfa0c5"},
+    {file = "regex-2020.11.13-cp36-cp36m-manylinux2010_x86_64.whl", hash = "sha256:56e01daca75eae420bce184edd8bb341c8eebb19dd3bce7266332258f9fb9dd7"},
+    {file = "regex-2020.11.13-cp36-cp36m-manylinux2014_aarch64.whl", hash = "sha256:6a8ce43923c518c24a2579fda49f093f1397dad5d18346211e46f134fc624e31"},
+    {file = "regex-2020.11.13-cp36-cp36m-manylinux2014_i686.whl", hash = "sha256:1ab79fcb02b930de09c76d024d279686ec5d532eb814fd0ed1e0051eb8bd2daa"},
+    {file = "regex-2020.11.13-cp36-cp36m-manylinux2014_x86_64.whl", hash = "sha256:9801c4c1d9ae6a70aeb2128e5b4b68c45d4f0af0d1535500884d644fa9b768c6"},
+    {file = "regex-2020.11.13-cp36-cp36m-win32.whl", hash = "sha256:49cae022fa13f09be91b2c880e58e14b6da5d10639ed45ca69b85faf039f7a4e"},
+    {file = "regex-2020.11.13-cp36-cp36m-win_amd64.whl", hash = "sha256:749078d1eb89484db5f34b4012092ad14b327944ee7f1c4f74d6279a6e4d1884"},
+    {file = "regex-2020.11.13-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:b2f4007bff007c96a173e24dcda236e5e83bde4358a557f9ccf5e014439eae4b"},
+    {file = "regex-2020.11.13-cp37-cp37m-manylinux1_i686.whl", hash = "sha256:38c8fd190db64f513fe4e1baa59fed086ae71fa45083b6936b52d34df8f86a88"},
+    {file = "regex-2020.11.13-cp37-cp37m-manylinux1_x86_64.whl", hash = "sha256:5862975b45d451b6db51c2e654990c1820523a5b07100fc6903e9c86575202a0"},
+    {file = "regex-2020.11.13-cp37-cp37m-manylinux2010_i686.whl", hash = "sha256:262c6825b309e6485ec2493ffc7e62a13cf13fb2a8b6d212f72bd53ad34118f1"},
+    {file = "regex-2020.11.13-cp37-cp37m-manylinux2010_x86_64.whl", hash = "sha256:bafb01b4688833e099d79e7efd23f99172f501a15c44f21ea2118681473fdba0"},
+    {file = "regex-2020.11.13-cp37-cp37m-manylinux2014_aarch64.whl", hash = "sha256:e32f5f3d1b1c663af7f9c4c1e72e6ffe9a78c03a31e149259f531e0fed826512"},
+    {file = "regex-2020.11.13-cp37-cp37m-manylinux2014_i686.whl", hash = "sha256:3bddc701bdd1efa0d5264d2649588cbfda549b2899dc8d50417e47a82e1387ba"},
+    {file = "regex-2020.11.13-cp37-cp37m-manylinux2014_x86_64.whl", hash = "sha256:02951b7dacb123d8ea6da44fe45ddd084aa6777d4b2454fa0da61d569c6fa538"},
+    {file = "regex-2020.11.13-cp37-cp37m-win32.whl", hash = "sha256:0d08e71e70c0237883d0bef12cad5145b84c3705e9c6a588b2a9c7080e5af2a4"},
+    {file = "regex-2020.11.13-cp37-cp37m-win_amd64.whl", hash = "sha256:1fa7ee9c2a0e30405e21031d07d7ba8617bc590d391adfc2b7f1e8b99f46f444"},
+    {file = "regex-2020.11.13-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:baf378ba6151f6e272824b86a774326f692bc2ef4cc5ce8d5bc76e38c813a55f"},
+    {file = "regex-2020.11.13-cp38-cp38-manylinux1_i686.whl", hash = "sha256:e3faaf10a0d1e8e23a9b51d1900b72e1635c2d5b0e1bea1c18022486a8e2e52d"},
+    {file = "regex-2020.11.13-cp38-cp38-manylinux1_x86_64.whl", hash = "sha256:2a11a3e90bd9901d70a5b31d7dd85114755a581a5da3fc996abfefa48aee78af"},
+    {file = "regex-2020.11.13-cp38-cp38-manylinux2010_i686.whl", hash = "sha256:d1ebb090a426db66dd80df8ca85adc4abfcbad8a7c2e9a5ec7513ede522e0a8f"},
+    {file = "regex-2020.11.13-cp38-cp38-manylinux2010_x86_64.whl", hash = "sha256:b2b1a5ddae3677d89b686e5c625fc5547c6e492bd755b520de5332773a8af06b"},
+    {file = "regex-2020.11.13-cp38-cp38-manylinux2014_aarch64.whl", hash = "sha256:2c99e97d388cd0a8d30f7c514d67887d8021541b875baf09791a3baad48bb4f8"},
+    {file = "regex-2020.11.13-cp38-cp38-manylinux2014_i686.whl", hash = "sha256:c084582d4215593f2f1d28b65d2a2f3aceff8342aa85afd7be23a9cad74a0de5"},
+    {file = "regex-2020.11.13-cp38-cp38-manylinux2014_x86_64.whl", hash = "sha256:a3d748383762e56337c39ab35c6ed4deb88df5326f97a38946ddd19028ecce6b"},
+    {file = "regex-2020.11.13-cp38-cp38-win32.whl", hash = "sha256:7913bd25f4ab274ba37bc97ad0e21c31004224ccb02765ad984eef43e04acc6c"},
+    {file = "regex-2020.11.13-cp38-cp38-win_amd64.whl", hash = "sha256:6c54ce4b5d61a7129bad5c5dc279e222afd00e721bf92f9ef09e4fae28755683"},
+    {file = "regex-2020.11.13-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:1862a9d9194fae76a7aaf0150d5f2a8ec1da89e8b55890b1786b8f88a0f619dc"},
+    {file = "regex-2020.11.13-cp39-cp39-manylinux1_i686.whl", hash = "sha256:4902e6aa086cbb224241adbc2f06235927d5cdacffb2425c73e6570e8d862364"},
+    {file = "regex-2020.11.13-cp39-cp39-manylinux1_x86_64.whl", hash = "sha256:7a25fcbeae08f96a754b45bdc050e1fb94b95cab046bf56b016c25e9ab127b3e"},
+    {file = "regex-2020.11.13-cp39-cp39-manylinux2010_i686.whl", hash = "sha256:d2d8ce12b7c12c87e41123997ebaf1a5767a5be3ec545f64675388970f415e2e"},
+    {file = "regex-2020.11.13-cp39-cp39-manylinux2010_x86_64.whl", hash = "sha256:f7d29a6fc4760300f86ae329e3b6ca28ea9c20823df123a2ea8693e967b29917"},
+    {file = "regex-2020.11.13-cp39-cp39-manylinux2014_aarch64.whl", hash = "sha256:717881211f46de3ab130b58ec0908267961fadc06e44f974466d1887f865bd5b"},
+    {file = "regex-2020.11.13-cp39-cp39-manylinux2014_i686.whl", hash = "sha256:3128e30d83f2e70b0bed9b2a34e92707d0877e460b402faca908c6667092ada9"},
+    {file = "regex-2020.11.13-cp39-cp39-manylinux2014_x86_64.whl", hash = "sha256:8f6a2229e8ad946e36815f2a03386bb8353d4bde368fdf8ca5f0cb97264d3b5c"},
+    {file = "regex-2020.11.13-cp39-cp39-win32.whl", hash = "sha256:f8f295db00ef5f8bae530fc39af0b40486ca6068733fb860b42115052206466f"},
+    {file = "regex-2020.11.13-cp39-cp39-win_amd64.whl", hash = "sha256:a15f64ae3a027b64496a71ab1f722355e570c3fac5ba2801cafce846bf5af01d"},
+    {file = "regex-2020.11.13.tar.gz", hash = "sha256:83d6b356e116ca119db8e7c6fc2983289d87b27b3fac238cfe5dca529d884562"},
+]
+six = [
+    {file = "six-1.15.0-py2.py3-none-any.whl", hash = "sha256:8b74bedcbbbaca38ff6d7491d76f2b06b3592611af620f8426e82dddb04a5ced"},
+    {file = "six-1.15.0.tar.gz", hash = "sha256:30639c035cdb23534cd4aa2dd52c3bf48f06e5f4a941509c8bafd8ce11080259"},
+]
+snowballstemmer = [
+    {file = "snowballstemmer-2.0.0-py2.py3-none-any.whl", hash = "sha256:209f257d7533fdb3cb73bdbd24f436239ca3b2fa67d56f6ff88e86be08cc5ef0"},
+    {file = "snowballstemmer-2.0.0.tar.gz", hash = "sha256:df3bac3df4c2c01363f3dd2cfa78cce2840a79b9f1c2d2de9ce8d31683992f52"},
+]
+termcolor = [
+    {file = "termcolor-1.1.0.tar.gz", hash = "sha256:1d6d69ce66211143803fbc56652b41d73b4a400a2891d7bf7a1cdf4c02de613b"},
+]
+toml = [
+    {file = "toml-0.10.2-py2.py3-none-any.whl", hash = "sha256:806143ae5bfb6a3c6e736a764057db0e6a0e05e338b5630894a5f779cabb4f9b"},
+    {file = "toml-0.10.2.tar.gz", hash = "sha256:b3bda1d108d5dd99f4a20d24d9c348e91c4db7ab1b749200bded2f839ccbe68f"},
+]
+tox = [
+    {file = "tox-3.20.1-py2.py3-none-any.whl", hash = "sha256:42ce19ce5dc2f6d6b1fdc5666c476e1f1e2897359b47e0aa3a5b774f335d57c2"},
+    {file = "tox-3.20.1.tar.gz", hash = "sha256:4321052bfe28f9d85082341ca8e233e3ea901fdd14dab8a5d3fbd810269fbaf6"},
+]
+typed-ast = [
+    {file = "typed_ast-1.4.1-cp35-cp35m-manylinux1_i686.whl", hash = "sha256:73d785a950fc82dd2a25897d525d003f6378d1cb23ab305578394694202a58c3"},
+    {file = "typed_ast-1.4.1-cp35-cp35m-manylinux1_x86_64.whl", hash = "sha256:aaee9905aee35ba5905cfb3c62f3e83b3bec7b39413f0a7f19be4e547ea01ebb"},
+    {file = "typed_ast-1.4.1-cp35-cp35m-win32.whl", hash = "sha256:0c2c07682d61a629b68433afb159376e24e5b2fd4641d35424e462169c0a7919"},
+    {file = "typed_ast-1.4.1-cp35-cp35m-win_amd64.whl", hash = "sha256:4083861b0aa07990b619bd7ddc365eb7fa4b817e99cf5f8d9cf21a42780f6e01"},
+    {file = "typed_ast-1.4.1-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:269151951236b0f9a6f04015a9004084a5ab0d5f19b57de779f908621e7d8b75"},
+    {file = "typed_ast-1.4.1-cp36-cp36m-manylinux1_i686.whl", hash = "sha256:24995c843eb0ad11a4527b026b4dde3da70e1f2d8806c99b7b4a7cf491612652"},
+    {file = "typed_ast-1.4.1-cp36-cp36m-manylinux1_x86_64.whl", hash = "sha256:fe460b922ec15dd205595c9b5b99e2f056fd98ae8f9f56b888e7a17dc2b757e7"},
+    {file = "typed_ast-1.4.1-cp36-cp36m-win32.whl", hash = "sha256:4e3e5da80ccbebfff202a67bf900d081906c358ccc3d5e3c8aea42fdfdfd51c1"},
+    {file = "typed_ast-1.4.1-cp36-cp36m-win_amd64.whl", hash = "sha256:249862707802d40f7f29f6e1aad8d84b5aa9e44552d2cc17384b209f091276aa"},
+    {file = "typed_ast-1.4.1-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:8ce678dbaf790dbdb3eba24056d5364fb45944f33553dd5869b7580cdbb83614"},
+    {file = "typed_ast-1.4.1-cp37-cp37m-manylinux1_i686.whl", hash = "sha256:c9e348e02e4d2b4a8b2eedb48210430658df6951fa484e59de33ff773fbd4b41"},
+    {file = "typed_ast-1.4.1-cp37-cp37m-manylinux1_x86_64.whl", hash = "sha256:bcd3b13b56ea479b3650b82cabd6b5343a625b0ced5429e4ccad28a8973f301b"},
+    {file = "typed_ast-1.4.1-cp37-cp37m-win32.whl", hash = "sha256:d5d33e9e7af3b34a40dc05f498939f0ebf187f07c385fd58d591c533ad8562fe"},
+    {file = "typed_ast-1.4.1-cp37-cp37m-win_amd64.whl", hash = "sha256:0666aa36131496aed8f7be0410ff974562ab7eeac11ef351def9ea6fa28f6355"},
+    {file = "typed_ast-1.4.1-cp38-cp38-macosx_10_15_x86_64.whl", hash = "sha256:d205b1b46085271b4e15f670058ce182bd1199e56b317bf2ec004b6a44f911f6"},
+    {file = "typed_ast-1.4.1-cp38-cp38-manylinux1_i686.whl", hash = "sha256:6daac9731f172c2a22ade6ed0c00197ee7cc1221aa84cfdf9c31defeb059a907"},
+    {file = "typed_ast-1.4.1-cp38-cp38-manylinux1_x86_64.whl", hash = "sha256:498b0f36cc7054c1fead3d7fc59d2150f4d5c6c56ba7fb150c013fbc683a8d2d"},
+    {file = "typed_ast-1.4.1-cp38-cp38-win32.whl", hash = "sha256:715ff2f2df46121071622063fc7543d9b1fd19ebfc4f5c8895af64a77a8c852c"},
+    {file = "typed_ast-1.4.1-cp38-cp38-win_amd64.whl", hash = "sha256:fc0fea399acb12edbf8a628ba8d2312f583bdbdb3335635db062fa98cf71fca4"},
+    {file = "typed_ast-1.4.1-cp39-cp39-macosx_10_15_x86_64.whl", hash = "sha256:d43943ef777f9a1c42bf4e552ba23ac77a6351de620aa9acf64ad54933ad4d34"},
+    {file = "typed_ast-1.4.1.tar.gz", hash = "sha256:8c8aaad94455178e3187ab22c8b01a3837f8ee50e09cf31f1ba129eb293ec30b"},
+]
+typing-extensions = [
+    {file = "typing_extensions-3.7.4.3-py2-none-any.whl", hash = "sha256:dafc7639cde7f1b6e1acc0f457842a83e722ccca8eef5270af2d74792619a89f"},
+    {file = "typing_extensions-3.7.4.3-py3-none-any.whl", hash = "sha256:7cb407020f00f7bfc3cb3e7881628838e69d8f3fcab2f64742a5e76b2f841918"},
+    {file = "typing_extensions-3.7.4.3.tar.gz", hash = "sha256:99d4073b617d30288f569d3f13d2bd7548c3a7e4c8de87db09a9d29bb3a4a60c"},
+]
+virtualenv = [
+    {file = "virtualenv-20.1.0-py2.py3-none-any.whl", hash = "sha256:b0011228208944ce71052987437d3843e05690b2f23d1c7da4263fde104c97a2"},
+    {file = "virtualenv-20.1.0.tar.gz", hash = "sha256:b8d6110f493af256a40d65e29846c69340a947669eec8ce784fcf3dd3af28380"},
+]
+wcwidth = [
+    {file = "wcwidth-0.2.5-py2.py3-none-any.whl", hash = "sha256:beb4802a9cebb9144e99086eff703a642a13d6a0052920003a230f3294bbe784"},
+    {file = "wcwidth-0.2.5.tar.gz", hash = "sha256:c4d647b99872929fdb7bdcaa4fbe7f01413ed3d98077df798530e5b04f116c83"},
+]
+wrapt = [
+    {file = "wrapt-1.12.1.tar.gz", hash = "sha256:b62ffa81fb85f4332a4f609cab4ac40709470da05643a082ec1eb88e6d9b97d7"},
+]
+zipp = [
+    {file = "zipp-3.4.0-py3-none-any.whl", hash = "sha256:102c24ef8f171fd729d46599845e95c7ab894a4cf45f5de11a44cc7444fb1108"},
+    {file = "zipp-3.4.0.tar.gz", hash = "sha256:ed5eee1974372595f9e416cc7bbeeb12335201d8081ca8a0743c954d4446e5cb"},
+]
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..2ce2ac3
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,36 @@
+[tool]
+[tool.poetry]
+name = "pytor"
+version = "0.1.6"
+description = "Manage Tor hidden services keys"
+license = "WTFPL"
+classifiers = ["Programming Language :: Python", "Development Status :: 1 - Planning", "License :: OSI Approved :: BSD License", "Natural Language :: English", "Operating System :: POSIX :: Linux", "Programming Language :: Python :: 3", "Programming Language :: Python :: 3.6", "Programming Language :: Python :: 3.7"]
+homepage = "http://github.com/cmehay/pytor"
+repository = "https://pypi.org/project/pytor/"
+authors = ["Christophe Mehay <cmehay@nospam.student.42.fr>"]
+
+[tool.poetry.dependencies]
+python = ">= 3.7, < 3.9"
+pycryptodome = ">=3.9.4"
+fire = ">=0.3.1"
+pyyaml = ">=5.3.1"
+
+[tool.poetry.dev-dependencies]
+numpy = "*"
+tox = "*"
+pre-commit = "*"
+ptpython = "*"
+pylama = "*"
+pylint = "*"
+pytest = "*"
+black = "^20.8b1"
+pyfakefs = "^4.3.0"
+
+[tool.poetry.scripts]
+pytor = "pytor.__main__:main"
+
+[build-system]
+requires = [
+    "poetry >= 1.0.9",
+]
+build-backend = "poetry.masonry.api"
diff --git a/pytor/__init__.py b/pytor/__init__.py
index c1c20bd..60c5c9b 100644
--- a/pytor/__init__.py
+++ b/pytor/__init__.py
@@ -2,6 +2,6 @@ from .onion import OnionV2
 from .onion import OnionV3
 
 __all__ = [
-    'OnionV2',
-    'OnionV3',
+    "OnionV2",
+    "OnionV3",
 ]
diff --git a/pytor/__main__.py b/pytor/__main__.py
index ec3037a..7c65fbc 100644
--- a/pytor/__main__.py
+++ b/pytor/__main__.py
@@ -10,13 +10,12 @@ from .onion import OnionV3
 
 
 class Format(object):
-
     def __init__(self, format: str):
-        attr = 'print_{format}'.format(format=format)
+        attr = "print_{format}".format(format=format)
         if not hasattr(self, attr):
-            raise Exception('Output format not valid')
+            raise Exception("Output format not valid")
         self.method = getattr(self, attr)
-        print('FYI: Binary data is base64 encoded', file=sys.stderr)
+        print("FYI: Binary data is base64 encoded", file=sys.stderr)
 
     def print(self, data: dict):
         self.method(data)
@@ -39,9 +38,9 @@ class Pytor(object):
         3: OnionV3,
     }
 
-    def __init__(self, version: int = 2, format: str = 'plain'):
+    def __init__(self, version: int = 2, format: str = "plain"):
         if version not in self._obj:
-            raise Exception('Onion version not valid')
+            raise Exception("Onion version not valid")
         self._version = version
         self._print = Format(format).print
         self._stderr: lambda x: print(x, file=sys.stderr)
@@ -60,18 +59,18 @@ class Pytor(object):
             obj.write_hidden_service(path=path, force=force)
         except NonEmptyDirException:
             s = input(
-                'Dir {path} not empty, override? [Y/n]'.format(path=path)
+                "Dir {path} not empty, override? [Y/n]".format(path=path)
             )
-            if not s or s.lower() == 'y':
+            if not s or s.lower() == "y":
                 obj.write_hidden_service(path=path, force=True)
             else:
-                print('Canceled...')
-        self._print({'path': path, **obj.serialize()})
+                print("Canceled...")
+        self._print({"path": path, **obj.serialize()})
 
 
 def main():
     fire.Fire(Pytor)
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     main()
diff --git a/pytor/ed25519.py b/pytor/ed25519.py
index e457fec..ca29620 100644
--- a/pytor/ed25519.py
+++ b/pytor/ed25519.py
@@ -7,19 +7,19 @@ yoochan
 """
 import collections
 
-Point = collections.namedtuple('Point', ['x', 'y'])
+Point = collections.namedtuple("Point", ["x", "y"])
 
 
-class Ed25519():
-    '''
+class Ed25519:
+    """
     Generate public key from private key secret hash
-    '''
+    """
 
     length = 256
 
     def __init__(self):
-        self.q = 2**255 - 19
-        self.l = 2**252 + 27742317777372353535851937790883648493
+        self.q = 2 ** 255 - 19
+        self.l = 2 ** 252 + 27742317777372353535851937790883648493
         self.d = -121665 * self.inverse(121666)
 
         self.i = pow(2, (self.q - 1) // 4, self.q)
@@ -28,13 +28,13 @@ class Ed25519():
 
     def from_bytes(self, h):
         """ pick 32 bytes, return a 256 bit int """
-        return int.from_bytes(h[0:self.length // 8], 'little', signed=False)
+        return int.from_bytes(h[0 : self.length // 8], "little", signed=False)
 
     def to_bytes(self, k):
-        return k.to_bytes(self.length // 8, 'little', signed=False)
+        return k.to_bytes(self.length // 8, "little", signed=False)
 
     def public_key_from_hash(self, hash):
-        c = self.outer(self.B, int.from_bytes(hash[:32], 'little'))
+        c = self.outer(self.B, int.from_bytes(hash[:32], "little"))
         return self.point_to_bytes(c)
 
     def inverse(self, x):
@@ -56,10 +56,12 @@ class Ed25519():
 
     def inner(self, P, Q):
         """ inner product on the curve, between two points """
-        x = (P.x * Q.y + Q.x * P.y) * \
-            self.inverse(1 + self.d * P.x * Q.x * P.y * Q.y)
-        y = (P.y * Q.y + P.x * Q.x) * \
-            self.inverse(1 - self.d * P.x * Q.x * P.y * Q.y)
+        x = (P.x * Q.y + Q.x * P.y) * self.inverse(
+            1 + self.d * P.x * Q.x * P.y * Q.y
+        )
+        y = (P.y * Q.y + P.x * Q.x) * self.inverse(
+            1 - self.d * P.x * Q.x * P.y * Q.y
+        )
         return Point(x % self.q, y % self.q)
 
     def outer(self, P, n):
@@ -73,4 +75,4 @@ class Ed25519():
         return Q
 
     def point_to_bytes(self, P):
-        return (P.y + ((P.x & 1) << 255)).to_bytes(self.length // 8, 'little')
+        return (P.y + ((P.x & 1) << 255)).to_bytes(self.length // 8, "little")
diff --git a/pytor/onion.py b/pytor/onion.py
index 57c171d..27d1b3f 100644
--- a/pytor/onion.py
+++ b/pytor/onion.py
@@ -16,10 +16,10 @@ from .ed25519 import Ed25519
 
 
 __all__ = [
-    'OnionV2',
-    'OnionV3',
-    'EmptyDirException',
-    'NonEmptyDirException',
+    "OnionV2",
+    "OnionV3",
+    "EmptyDirException",
+    "NonEmptyDirException",
 ]
 
 
@@ -32,9 +32,9 @@ class NonEmptyDirException(Exception):
 
 
 class Onion(ABC):
-    '''
+    """
     Interface to implement hidden services keys managment
-    '''
+    """
 
     _priv = None
     _pub = None
@@ -44,9 +44,9 @@ class Onion(ABC):
     _host_filename = None
     _version = None
 
-    def __init__(self,
-                 private_key: bytes = None,
-                 hidden_service_path: str = None):
+    def __init__(
+        self, private_key: bytes = None, hidden_service_path: str = None
+    ):
 
         if hidden_service_path:
             try:
@@ -61,63 +61,62 @@ class Onion(ABC):
 
     @abstractmethod
     def gen_new_private_key(self) -> None:
-        'Generate new private key'
+        "Generate new private key"
         ...
 
     def set_private_key_from_file(self, file: BinaryIO):
-        'Load private key from file'
+        "Load private key from file"
         self.set_private_key(file.read())
 
     @abstractmethod
     def set_private_key(self, key: bytes) -> None:
-        'Add private key'
+        "Add private key"
         ...
 
     @abstractmethod
     def _save_keypair(self, key) -> None:
-        'Generate pub key from priv key and save both in instance'
+        "Generate pub key from priv key and save both in instance"
         ...
 
     def load_hidden_service(self, path: str) -> None:
         if not os.path.isdir(path):
             raise Exception(
-                '{path} should be an existing directory'.format(path=path)
+                "{path} should be an existing directory".format(path=path)
             )
         if self._priv_key_filename not in os.listdir(path):
             raise EmptyDirException(
-                '{key} file not found in {path}'.format(
-                    key=self._priv_key_filename,
-                    path=path
+                "{key} file not found in {path}".format(
+                    key=self._priv_key_filename, path=path
                 )
             )
-        with open(os.path.join(path, self._priv_key_filename), 'rb') as f:
+        with open(os.path.join(path, self._priv_key_filename), "rb") as f:
             self.set_private_key_from_file(f)
 
-    def write_hidden_service(self, path: str = None,
-                             force: bool = False) -> None:
+    def write_hidden_service(
+        self, path: str = None, force: bool = False
+    ) -> None:
         path = path or self._hidden_service_path
         if not path:
-            raise Exception('Missing hidden service path')
+            raise Exception("Missing hidden service path")
         if not os.path.exists(path):
             raise Exception(
-                '{path} should be an existing directory'.format(path=path)
+                "{path} should be an existing directory".format(path=path)
             )
-        if (os.path.exists(
-            os.path.join(path, self._host_filename)
-        ) or os.path.exists(
-            os.path.join(path, self._priv_key_filename)
-        )) and not force:
+        if (
+            os.path.exists(os.path.join(path, self._host_filename))
+            or os.path.exists(os.path.join(path, self._priv_key_filename))
+        ) and not force:
             raise NonEmptyDirException(
-                'Use force=True for non empty hidden service directory'
+                "Use force=True for non empty hidden service directory"
             )
-        with open(os.path.join(path, self._priv_key_filename), 'wb') as f:
+        with open(os.path.join(path, self._priv_key_filename), "wb") as f:
             f.write(self._get_private_key_has_native())
-        with open(os.path.join(path, self._host_filename), 'w') as f:
+        with open(os.path.join(path, self._host_filename), "w") as f:
             f.write(self.onion_hostname)
 
     def get_available_private_key_formats(self) -> list:
-        'Get private key export availables formats'
-        r = re.compile(r'_get_private_key_has_([a-z]+)')
+        "Get private key export availables formats"
+        r = re.compile(r"_get_private_key_has_([a-z]+)")
         formats = []
         for method in dir(self):
             m = r.match(method)
@@ -125,36 +124,32 @@ class Onion(ABC):
                 formats.append(m[1])
         return formats
 
-    def get_private_key(self, format: str = 'native'):
-        'Get the private key as specified format'
-        method = '_get_private_key_has_{format}'.format(
-            format=format
-        )
+    def get_private_key(self, format: str = "native"):
+        "Get the private key as specified format"
+        method = "_get_private_key_has_{format}".format(format=format)
         if not hasattr(self, method) and not callable(getattr(self, method)):
-            raise NotImplementedError('Method {method} if not implemented')
+            raise NotImplementedError("Method {method} if not implemented")
         return getattr(self, method)()
 
     @abstractmethod
     def _get_private_key_has_native(self) -> bytes:
-        'Get private key like in tor native format'
+        "Get private key like in tor native format"
         ...
 
     @abstractmethod
     def get_public_key(self) -> bytes:
-        'Compute public key'
+        "Compute public key"
         if not self._priv:
-            raise Exception('No private key has been set')
+            raise Exception("No private key has been set")
 
     @abstractmethod
     def get_onion_str(self) -> str:
-        'Compute onion address string'
+        "Compute onion address string"
         ...
 
     @property
     def onion_hostname(self) -> str:
-        return "{onion}.onion".format(
-            onion=self.get_onion_str()
-        )
+        return "{onion}.onion".format(onion=self.get_onion_str())
 
     @property
     def version(self) -> str:
@@ -162,16 +157,17 @@ class Onion(ABC):
 
 
 class OnionV2(Onion):
-    '''
+    """
     Tor onion address v2 implement
-    '''
-    _priv_key_filename = 'private_key'
-    _host_filename = 'hostname'
+    """
+
+    _priv_key_filename = "private_key"
+    _host_filename = "hostname"
 
     _version = 2
 
     def gen_new_private_key(self) -> None:
-        'Generate new 1024 bits RSA key for hidden service'
+        "Generate new 1024 bits RSA key for hidden service"
         self._save_keypair(RSA.generate(bits=1024))
 
     def _save_keypair(self, key: RSA.RsaKey) -> None:
@@ -179,28 +175,28 @@ class OnionV2(Onion):
         self._pub = key.publickey().exportKey("DER")
 
     def set_private_key(self, key: bytes) -> None:
-        'Add private key'
-        if not key.startswith(b'-----BEGIN RSA PRIVATE KEY-----'):
+        "Add private key"
+        if not key.startswith(b"-----BEGIN RSA PRIVATE KEY-----"):
             raise Exception(
-                'Private key does not seems to be a valid RSA PEM key'
+                "Private key does not seems to be a valid RSA PEM key"
             )
         self._save_keypair(RSA.importKey(key.strip()))
 
     def _get_private_key_has_native(self) -> bytes:
-        'Get RSA private key like in PEM'
+        "Get RSA private key like in PEM"
         return self._get_private_key_has_pem()
 
     def _get_private_key_has_pem(self) -> bytes:
-        'Get RSA private key like in PEM'
+        "Get RSA private key like in PEM"
         return RSA.importKey(self._priv).exportKey("PEM")
 
     def get_public_key(self) -> bytes:
-        'Compute public key'
+        "Compute public key"
         super().get_public_key()
         return self._pub
 
     def get_onion_str(self) -> str:
-        'Compute onion address string'
+        "Compute onion address string"
         return b32encode(sha1(self._pub[22:]).digest()[:10]).decode().lower()
 
     def serialize(self):
@@ -211,16 +207,16 @@ class OnionV2(Onion):
 
 
 class OnionV3(Onion):
-    '''
+    """
     Tor onion address v3 implement
-    '''
+    """
 
-    _header_priv = b'== ed25519v1-secret: type0 ==\x00\x00\x00'
-    _header_pub = b'== ed25519v1-public: type0 ==\x00\x00\x00'
+    _header_priv = b"== ed25519v1-secret: type0 ==\x00\x00\x00"
+    _header_pub = b"== ed25519v1-public: type0 ==\x00\x00\x00"
 
-    _priv_key_filename = 'hs_ed25519_secret_key'
-    _pub_key_filename = 'hs_ed25519_public_key'
-    _host_filename = 'hostname'
+    _priv_key_filename = "hs_ed25519_secret_key"
+    _pub_key_filename = "hs_ed25519_public_key"
+    _host_filename = "hostname"
 
     _version = 3
 
@@ -229,7 +225,7 @@ class OnionV3(Onion):
         self._pub = Ed25519().public_key_from_hash(key)
 
     def gen_new_private_key(self) -> None:
-        'Generate new tor ed25519 512 bits key'
+        "Generate new tor ed25519 512 bits key"
         random = get_random_bytes(32)
         key = bytearray(sha512(random).digest())
         key[0] &= 248
@@ -238,57 +234,60 @@ class OnionV3(Onion):
         self._save_keypair(bytes(key))
 
     def set_private_key(self, key: bytes) -> None:
-        'Add private key'
+        "Add private key"
         if not key.startswith(self._header_priv):
             raise Exception(
-                'Private key does not seems to be a valid ed25519 tor key'
+                "Private key does not seems to be a valid ed25519 tor key"
             )
         parsed_key = key[32:]
         if len(parsed_key) != 64:
             raise Exception(
-                'Private key does not seem to have the good lenght'
+                "Private key does not seem to have the good lenght"
             )
         self._save_keypair(parsed_key)
 
     def set_private_key_from_file(self, file: BinaryIO):
-        'Load private key from file'
+        "Load private key from file"
         self.set_private_key(file.read())
 
     def _get_private_key_has_native(self) -> bytes:
-        'Get RSA private key like in PEM'
+        "Get RSA private key like in PEM"
         return self._header_priv + self._priv
 
     def get_public_key(self) -> bytes:
-        'Compute public key'
+        "Compute public key"
         super().get_public_key()
         return self._header_pub + self._pub
 
-    def write_hidden_service(self, path: str = None,
-                             force: bool = False) -> None:
+    def write_hidden_service(
+        self, path: str = None, force: bool = False
+    ) -> None:
         path = path or self._hidden_service_path
         super().write_hidden_service(path, force)
-        with open(os.path.join(path, self._pub_key_filename), 'wb') as f:
+        with open(os.path.join(path, self._pub_key_filename), "wb") as f:
             f.write(self.get_public_key())
 
     def get_onion_str(self) -> str:
-        'Compute onion address string'
-        version_byte = b'\x03'
+        "Compute onion address string"
+        version_byte = b"\x03"
 
         def checksum(pubkey):
-            checksum_str = '.onion checksum'.encode('ascii')
-            return sha3_256(
-                checksum_str + self._pub + version_byte
-            ).digest()[:2]
-
-        return b32encode(
-            self._pub + checksum(self._pub) + version_byte
-        ).decode().lower()
+            checksum_str = ".onion checksum".encode("ascii")
+            return sha3_256(checksum_str + self._pub + version_byte).digest()[
+                :2
+            ]
+
+        return (
+            b32encode(self._pub + checksum(self._pub) + version_byte)
+            .decode()
+            .lower()
+        )
 
     def serialize(self):
         return {
             self._host_filename: self.onion_hostname,
             self._priv_key_filename: b64encode(
-                self.get_private_key()).decode(),
-            self._pub_key_filename: b64encode(
-                self.get_public_key()).decode(),
+                self.get_private_key()
+            ).decode(),
+            self._pub_key_filename: b64encode(self.get_public_key()).decode(),
         }
diff --git a/pytor/test/test_onions.py b/pytor/test/test_onions.py
index c51fd82..42ecd74 100644
--- a/pytor/test/test_onions.py
+++ b/pytor/test/test_onions.py
@@ -16,9 +16,9 @@ class _testOnion:
     version = None
 
     check_method = {
-        'priv': 'get_private_key',
-        'pub': 'get_public_key',
-        'onion': 'onion_hostname',
+        "priv": "get_private_key",
+        "pub": "get_public_key",
+        "onion": "onion_hostname",
     }
 
     def generate_new_key(self):
@@ -32,22 +32,22 @@ class _testOnion:
 
     def test_generate_key(self):
         o = self.onion_cls()
-        assert o.onion_hostname.endswith('.onion')
+        assert o.onion_hostname.endswith(".onion")
         assert len(o.onion_hostname) == len(self.onion_hostname)
 
     def test_import_file(self, fs):
-        path = os.path.join('/test_tor', self.files['priv'])
+        path = os.path.join("/test_tor", self.files["priv"])
         fs.create_file(path, contents=self.private_key)
 
         o = self.onion_cls()
-        path = os.path.join('/test_tor', self.files['priv'])
-        with open(path, 'rb') as f:
+        path = os.path.join("/test_tor", self.files["priv"])
+        with open(path, "rb") as f:
             o.set_private_key_from_file(f)
         assert o.onion_hostname == self.onion_hostname
 
     def test_import_hidden_directory(self, tmpdir):
         d = tmpdir.mkdir("hidden_directory")
-        f = d.join(self.files['priv'])
+        f = d.join(self.files["priv"])
         f.write_binary(self.private_key)
         o = self.onion_cls(hidden_service_path=d)
         assert o.onion_hostname == self.onion_hostname
@@ -67,20 +67,19 @@ class _testOnion:
         d = tmpdir.mkdir("hidden_directory")
         o = self.onion_cls(hidden_service_path=d)
         o.write_hidden_service()
-        assert d.join(self.files['priv']).read_binary() == o.get_private_key()
-        assert d.join(self.files['onion']).read() == o.onion_hostname
+        assert d.join(self.files["priv"]).read_binary() == o.get_private_key()
+        assert d.join(self.files["onion"]).read() == o.onion_hostname
 
     def test_import_hidden_directory_with_new_key(self, tmpdir):
         d = tmpdir.mkdir("hidden_directory")
-        f = d.join(self.files['priv'])
+        f = d.join(self.files["priv"])
         f.write_binary(self.generate_new_key())
-        o = self.onion_cls(hidden_service_path=d,
-                           private_key=self.private_key)
+        o = self.onion_cls(hidden_service_path=d, private_key=self.private_key)
         with pytest.raises(Exception):
             o.write_hidden_service()
         o.write_hidden_service(force=True)
-        assert d.join(self.files['priv']).read_binary() == o.get_private_key()
-        assert d.join(self.files['onion']).read() == o.onion_hostname
+        assert d.join(self.files["priv"]).read_binary() == o.get_private_key()
+        assert d.join(self.files["onion"]).read() == o.onion_hostname
 
     def test_version(self):
         assert self.onion_cls().version == str(self.version)
@@ -88,7 +87,7 @@ class _testOnion:
 
 class TestOnionV2(_testOnion):
 
-    private_key = '''
+    private_key = """
 -----BEGIN RSA PRIVATE KEY-----
 MIICXAIBAAKBgQCsMP4gl6g1Q313miPhb1GnDr56ZxIWGsO2PwHM1infkbhlBakR
 6DGQfpE31L1ZKTUxY0OexKbW088v8qCOfjD9Zk1i80JP4xzfWQcwFZ5yM/0fkhm3
@@ -104,19 +103,21 @@ l5MQPWBkRKK2pc2Hfj8cdIMi8kJ/1CyCwE6c5l8etR3sbIMRTtZ76nAbXRFkmsRv
 La/7Syrnobngsh/vX90CQB+PSSBqiPSsK2yPz6Gsd6OLCQ9sdy2oRwFTasH8sZyl
 bhJ3M9WzP/EMkAzyW8mVs1moFp3hRcfQlZHl6g1U9D8=
 -----END RSA PRIVATE KEY-----
-    '''.strip().encode()
+    """.strip().encode()
 
-    public_key = b64decode('''
+    public_key = b64decode(
+        """
 MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCsMP4gl6g1Q313miPhb1GnDr56
 ZxIWGsO2PwHM1infkbhlBakR6DGQfpE31L1ZKTUxY0OexKbW088v8qCOfjD9Zk1i
 80JP4xzfWQcwFZ5yM/0fkhm3zLXqXdEahvRthmFsS8OWusRs/04U247ryTm4k5S0
 Ch5OTBuvMLzQ8W0yDwIDAQAB
-    ''')
-    onion_hostname = 'wcet3bgkj4purdfx.onion'
+    """
+    )
+    onion_hostname = "wcet3bgkj4purdfx.onion"
     onion_cls = OnionV2
     files = {
-        'priv': 'private_key',
-        'onion': 'hostname',
+        "priv": "private_key",
+        "onion": "hostname",
     }
 
     version = 2
@@ -124,24 +125,28 @@ Ch5OTBuvMLzQ8W0yDwIDAQAB
 
 class TestOnionV3(_testOnion):
 
-    private_key = b64decode('''
+    private_key = b64decode(
+        """
 PT0gZWQyNTUxOXYxLXNlY3JldDogdHlwZTAgPT0AAACArobDQYyZAWXei4QZwr++j96H1X/gq14N
 wLRZ2O5DXuL0EzYKkdhZSILY85q+kfwZH8z4ceqe7u1F+0pQi/sM
-    ''')
+    """
+    )
 
-    public_key = b64decode('''
+    public_key = b64decode(
+        """
 PT0gZWQyNTUxOXYxLXB1YmxpYzogdHlwZTAgPT0AAAC9kzftiea/kb+TWlCEVNpfUJLVk+rFIoMG
 m9/hW13isA==
-    ''')
+    """
+    )
 
     onion_hostname = (
-        'xwjtp3mj427zdp4tljiiivg2l5ijfvmt5lcsfaygtpp6cw254kykvpyd.onion'
+        "xwjtp3mj427zdp4tljiiivg2l5ijfvmt5lcsfaygtpp6cw254kykvpyd.onion"
     )
 
     onion_cls = OnionV3
     files = {
-        'priv': 'hs_ed25519_secret_key',
-        'pub': 'hs_ed25519_public_key',
-        'onion': 'hostname',
+        "priv": "hs_ed25519_secret_key",
+        "pub": "hs_ed25519_public_key",
+        "onion": "hostname",
     }
     version = 3
diff --git a/setup.py b/setup.py
deleted file mode 100644
index bf77bef..0000000
--- a/setup.py
+++ /dev/null
@@ -1,43 +0,0 @@
-#!/usr/bin/env python3
-# -*- coding: utf-8 -*-
-from setuptools import find_packages
-from setuptools import setup
-
-setup(
-    name='pytor',
-
-    version='0.1.5',
-
-    packages=find_packages(),
-
-    author="Christophe Mehay",
-
-    author_email="cmehay@nospam.student.42.fr",
-
-    description="Manage Tor hidden services keys",
-
-    include_package_data=True,
-
-    url='http://github.com/cmehay/pytor',
-
-    classifiers=[
-        "Programming Language :: Python",
-        "Development Status :: 1 - Planning",
-        "License :: OSI Approved :: BSD License",
-        "Natural Language :: English",
-        "Operating System :: POSIX :: Linux",
-        "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.6",
-        "Programming Language :: Python :: 3.7",
-    ],
-
-    install_requires=['pycryptodome==3.9.4'],
-
-    entry_points={
-        'console_scripts': [
-            'pytor = pytor.__main__:main',
-        ],
-    },
-
-    license="WTFPL",
-)
diff --git a/tox.ini b/tox.ini
index 785afd8..7e8bc4b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,10 +1,17 @@
 [tox]
-envlist = py34, py35, py36, py37
+envlist = py34, py35, py36, py37, py38
 skip_missing_interpreters = true
+isolated_build = true
+
+; [testenv]
+; deps=
+;     pytest
+;     pyfakefs
+;     pycryptodome
+; commands=pytest -v
 
 [testenv]
-deps=
-    pytest
-    pyfakefs
-    pycryptodome
-commands=pytest -v
+whitelist_externals = poetry
+commands =
+  poetry install -v
+  poetry run pytest -v