Add cpc

README.md

@@ -347,6 +347,7 @@ See also [A comparison of operating systems written in Rust](https://github.com/
 
 ### Text processing
 
+* [cpc](https://github.com/probablykasper/cpc) - Parses and calculates strings of math with support for units and unit conversion, from `1+2` to `1% of round(1 lightyear / 14!s to km/h)`.
 * [grex](https://github.com/pemistahl/grex) — A command-line tool and library for generating regular expressions from user-provided test cases [<img src="https://api.travis-ci.org/pemistahl/grex.svg?branch=master">](https://travis-ci.org/pemistahl/grex)
 * [TankerHQ/ruplacer](https://github.com/TankerHQ/ruplacer) — Find and replace text in source files [<img img src="https://api.travis-ci.org/TankerHQ/ruplacer.svg?branch=master">](https://travis-ci.org/TankerHQ/ruplacer)
 * [ripgrep](https://crates.io/crates/ripgrep) — combines the usability of The Silver Searcher with the raw speed of grep [<img src="https://api.travis-ci.org/BurntSushi/ripgrep.svg?branch=master">](https://travis-ci.org/BurntSushi/ripgrep)