Implementation of Caverphone 2 algorithm

Implementation of Caverphone 1 algorithm

Implementation of the DoubleMetaphone algorithm (#20)

* Implementation of the DoubleMetaphone algorithm

* Update README.md

* Update __init__.py

Merge pull request #18 from linuxgoose/1-add-nysiis-algorithm

Addition of NYSIIS

Addition of NYSIIS

#1

Merge pull request #9 from linuxgoose/7-soundex-incorrect-calculation

Fixing of not dropping all leading instances of the first character m…

Merge branch 'master' into 7-soundex-incorrect-calculation

Merge pull request #8 from linuxgoose/6-rebrand---linguistics-robin

Rebranding

Fixing of not dropping all leading instances of the first character matching the next in line

Rebranding

general updates

* added exception type for empty string
* updated checks in algorithms
* updated tests
* moved to new flit publishing method using pyproject.toml

Added Levenshtein, Hamming distance, removed half-done algorithms.

Updated README with instructions of use.
Added the skeleton for DaitchMokotoff.

Algorithm implementation:
* Added Soundex, Fuzzy Soundex, Metaphone, Lein, MRA.
* Added tests for every algorithm.
* Updated Licence.
* Added and tested some utils.