[ENH] Add float comparison

[arnaudbore]

No description provided.

[codecov-commenter]

Codecov Report

Merging #229 (8f89495) into master (a61b83e) will increase coverage by 0.88%.
The diff coverage is 62.16%.

@@            Coverage Diff             @@
##           master     #229      +/-   ##
==========================================
+ Coverage   78.05%   78.94%   +0.88%     
==========================================
  Files          15       15              
  Lines         966     1002      +36     
  Branches      197      211      +14     
==========================================
+ Hits          754      791      +37     
+ Misses        170      165       -5     
- Partials       42       46       +4     

Flag	Coverage Δ
pytest	78.94% <62.16%> (+0.88%)	⬆️

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Impacted Files	Coverage Δ
dcm2bids/dcm2bids_gen.py	79.51% <ø> (ø)
dcm2bids/sidecar.py	80.57% <62.16%> (+2.87%)	⬆️