Beautysh

Thanks oliverhullet for the contributions!

Merged:
* 24

Thanks streambinder for the contributions!

Merged:
- 18
- 19

Thanks to jesselang for the contributions!

Merged:
- 16
- Uses raw strings as per the [documentation](https://docs.python.org/2/library/re.html)
- 17
- Fixes 6
- 18
- Improves heredoc indentation

Thanks jesselang for these contributions!

Merged:
- 14
- Add a [pre-commit](http://pre-commit.com/) hook
- 15
- Fix an issue with blank line preservation.

Thanks jesselang for the contributions!

Merged 13, improving case indentation and `;;` spacing. Thanks to jesselang for the contributions.