unicode author name

The author was spelled by using ascii characters only.
We no longer insist it to be written in ascii characters only.

examples/fzfimg.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 # This is just an example how ueberzug can be used with fzf.
-# Copyright (C) 2019  Nico Baeurer
+# Copyright (C) 2019  Nico Bäurer
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by

examples/mastodon.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 # This is just an example how ueberzug can be used.
-# Copyright (C) 2019  Nico Baeurer
+# Copyright (C) 2019  Nico Bäurer
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by

ueberzug/__init__.py

@@ -4,4 +4,4 @@ __description__ ='ueberzug is a command line util which allows to display images
 __url_repository__ = 'https://github.com/seebye/ueberzug'
 __url_bug_reports__ = 'https://github.com/seebye/ueberzug/issues'
 __url_project__ = __url_repository__
-__author__ = 'Nico Baeurer'
+__author__ = 'Nico Bäurer'

ueberzug/__main__.py

@@ -27,7 +27,7 @@ Layer options:
 
 
 License:
-    ueberzug  Copyright (C) 2018  Nico Baeurer
+    ueberzug  Copyright (C) 2018  Nico Bäurer
     This program comes with ABSOLUTELY NO WARRANTY.
     This is free software, and you are welcome to redistribute it
     under certain conditions.