Fixes #630 Clean up word tokenizer module (#631)
Fixes #630 Clean up word tokenizer module (#631)

* Check that tokens exist before handling them in Latin word tokenizer

* Update files

* Reset master

* Reset master

* rm whitespace

* Add default Greek tokenizer

* Comment on word tokenizer

* Cleanup order of languages/functions, alphabetical

* Update docs for Greek word tokenizer

* Add unittest for Greek word tokenizer

* Remove encoding declaration

* Clean up imports

* Clean up author

* Comment on missing authors

* Delete unused imports

D-K-E/cltk,diyclassics/cltk,TylerKirby/cltk,LBenzahia/cltk,TylerKirby/cltk,kylepjohnson/cltk,LBenzahia/cltk,cltk/cltk