Salve

Wanted to improve docs

What's Changed
* Improve docs and examples by Moosems in https://github.com/Moosems/salve/pull/5
* Use multiprocessing module by Moosems in https://github.com/Moosems/salve/pull/10

**Full Changelog**: https://github.com/Moosems/salve/compare/v0.3.3...v0.4.0

Highlights now supports custom ranges to highlight to improve speed! Not yet documented ;D

**Full Changelog**: https://github.com/Moosems/salve/compare/v0.3.2...v0.3.3

**Full Changelog**: https://github.com/Moosems/salve/compare/v0.3.1...v0.3.2

**Full Changelog**: https://github.com/Moosems/salve/compare/v0.3.0...v0.3.1

Improve backend with temp files, improve highlight tokens, better docs and examples, better tests. Removed difflib, added more token types, better type checking.

**Full Changelog**: https://github.com/Moosems/salve/compare/v0.2.2...v0.3.0