proposal: adding zipby + unzipby

[samber]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 50.37313% with 133 lines in your changes are missing coverage. Please review.

Project coverage is 93.87%. Comparing base (21395c5) to head (5d71d2d).
Report is 6 commits behind head on master.

Files	Patch %	Lines
tuples.go	50.37%	133 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##           master     #449      +/-   ##
==========================================
- Coverage   99.34%   93.87%   -5.47%     
==========================================
  Files          16       16              
  Lines        2132     2400     +268     
==========================================
+ Hits         2118     2253     +135     
- Misses         13      146     +133     
  Partials        1        1              

Flag	Coverage Δ
unittests	93.87% <50.37%> (-5.47%)	⬇️

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