Linguistics-robin

What's Changed
* Fix to missing self._vowels by linuxgoose in https://github.com/linuxgoose/linguistics-robin/pull/25


**Full Changelog**: https://github.com/linuxgoose/linguistics-robin/compare/v0.5.8...v0.5.9

What's Changed
* 23 caverphone 2 vowels undefined error by linuxgoose in https://github.com/linuxgoose/linguistics-robin/pull/24


**Full Changelog**: https://github.com/linuxgoose/linguistics-robin/compare/v0.5.7...v0.5.8

What's Changed
* 10 add caverphone1 and caverphone2 by linuxgoose in https://github.com/linuxgoose/linguistics-robin/pull/22


**Full Changelog**: https://github.com/linuxgoose/linguistics-robin/compare/v0.5.6...v0.5.7

**Full Changelog**: https://github.com/linuxgoose/linguistics-robin/compare/v0.5.7...v0.5.7b1

What's Changed
* Implementation of the DoubleMetaphone algorithm by linuxgoose in https://github.com/linuxgoose/linguistics-robin/pull/20


**Full Changelog**: https://github.com/linuxgoose/linguistics-robin/compare/v0.5.5...v0.5.6

What's Changed
* Addition of NYSIIS by linuxgoose in https://github.com/linuxgoose/linguistics-robin/pull/18


**Full Changelog**: https://github.com/linuxgoose/linguistics-robin/compare/v0.5.4...v0.5.5