Issue 119 metadata use2

[R-Palazzo]

First pull request, Romain Palazzo for issue 119. Resolves #119 Thank you for your help :)

[CLAassistant]

All committers have signed the CLA.

[codecov-commenter]

Codecov Report

Base: 74.42% // Head: 75.04% // Increases project coverage by +0.62% :tada:

Coverage data is based on head (306c1b8) compared to base (2c264e1). Patch coverage: 75.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #251      +/-   ##
==========================================
+ Coverage   74.42%   75.04%   +0.62%     
==========================================
  Files          74       74              
  Lines        2932     2937       +5     
==========================================
+ Hits         2182     2204      +22     
+ Misses        750      733      -17     

Impacted Files	Coverage Δ
sdmetrics/single_table/detection/base.py	84.44% <75.00%> (+34.44%)	:arrow_up:
sdmetrics/single_table/detection/sklearn.py	92.30% <0.00%> (+15.38%)	:arrow_up:

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