For a 0.15.2 release

[ablaom]

#421

[codecov-commenter]

Codecov Report

Merging #423 into master will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #423   +/-   ##
=======================================
  Coverage   81.83%   81.83%           
=======================================
  Files          38       38           
  Lines        2703     2703           
=======================================
  Hits         2212     2212           
  Misses        491      491           

Impacted Files	Coverage Δ
src/MLJBase.jl	100.00% <ø> (ø)
src/measures/continuous.jl	100.00% <100.00%> (ø)
src/univariate_finite/arrays.jl	100.00% <100.00%> (ø)

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