synonymizer refactor2

[cmungall]

• synonymizer refactoring.
• Command line

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 83.78378% with 60 lines in your changes are missing coverage. Please review.

Project coverage is 75.46%. Comparing base (8da76e1) to head (37f49ed).
Report is 2 commits behind head on main.

Files	Patch %	Lines
src/oaklib/datamodels/synonymizer_datamodel.py	79.18%	51 Missing ⚠️
src/oaklib/cli.py	80.00%	7 Missing ⚠️
src/oaklib/utilities/lexical/synonymizer.py	96.55%	2 Missing ⚠️

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Additional details and impacted files

@@           Coverage Diff            @@
##             main     #728    +/-   ##
========================================
  Coverage   75.46%   75.46%            
========================================
  Files         272      275     +3     
  Lines       31875    32189   +314     
========================================
+ Hits        24056    24293   +237     
- Misses       7819     7896    +77     

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