onig 6.4.0

Rust-Onig is a set of Rust bindings for the Oniguruma regular expression library. Oniguruma is a modern regex library with support for multiple character encodings and regex syntaxes.
Documentation
# Rust-Onig is Open Source!

All source code in this repository is distributed under the terms of
the *MIT License* unless otherwise stated. The Oniguruma source code
remains the property of the original authors and is re-distributed
under the original license.

> The MIT License (MIT)
> 
> Copyright (c) 2015 Will Speak <will@willspeak.me>, Ivan Ivashchenko
> <defuz@me.com>, and contributors.
> 
> Permission is hereby granted, free of charge, to any person obtaining a copy
> of this software and associated documentation files (the "Software"), to deal
> in the Software without restriction, including without limitation the rights
> to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
> copies of the Software, and to permit persons to whom the Software is
> furnished to do so, subject to the following conditions:
> 
> The above copyright notice and this permission notice shall be included in all
> copies or substantial portions of the Software.
> 
> THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
> AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
> OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
> SOFTWARE.