Fix findmax etc.

[tkf]

No description provided.

[codecov]

Codecov Report

Merging #50 (49d5bd8) into master (ae9d998) will increase coverage by 0.09%.
The diff coverage is 91.66%.

@@            Coverage Diff             @@
##           master      #50      +/-   ##
==========================================
+ Coverage   86.50%   86.59%   +0.09%     
==========================================
  Files           8        8              
  Lines         363      373      +10     
==========================================
+ Hits          314      323       +9     
- Misses         49       50       +1     

Flag	Coverage Δ
unittests	86.59% <91.66%> (+0.09%)	⬆️

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Impacted Files	Coverage Δ
src/Folds.jl	100.00% <ø> (ø)
src/reduce.jl	92.74% <91.66%> (-0.25%)	⬇️

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