prevent int,float,decimal -> str

[samuelcolvin]

fix #150

Almost all the changes are in tests, the actual code removed is trival, wouldn't be hard to add it again if we ever did add a comparability flag, through I'm opposed to that.

[codecov]

Codecov Report

Merging #212 (38e14a1) into main (1e93886) will decrease coverage by 0.00%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #212      +/-   ##
==========================================
- Coverage   98.68%   98.68%   -0.01%     
==========================================
  Files          47       47              
  Lines        4948     4936      -12     
  Branches       34       34              
==========================================
- Hits         4883     4871      -12     
  Misses         65       65              

Impacted Files	Coverage Δ
src/input/input_json.rs	97.51% <ø> (-0.03%)	⬇️
src/input/input_python.rs	98.45% <ø> (-0.04%)	⬇️
src/input/return_enums.rs	100.00% <ø> (ø)

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