Feat/simplify is known function

[juanjoDiaz]

Partially solves #125

We still need to redo the dictionaries, etc.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 96.34%. Comparing base (6049223) to head (a0bef86).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #126      +/-   ##
==========================================
- Coverage   96.36%   96.34%   -0.02%     
==========================================
  Files          32       32              
  Lines         578      575       -3     
==========================================
- Hits          557      554       -3     
  Misses         21       21              

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[adbar]

The PR moves is_known() out of the Lemmatizer class and removes the greedy argument, all good!

[adbar]

Great, thanks.