Tables.columnnames(table) => Tables.columnnames(cols)

[eliascarv]

closes #61

[juliohm]

Thank you for fixing all these cases @eliascarv , can we also add a simple test for each transform using a row table? That way we make sure that we don't break things in the future.

[eliascarv]

Note: I didn't add test for Select and Reject because their fix depends on PR #64.

[codecov-commenter]

Codecov Report

Merging #63 (10c4219) into master (aaefe44) will decrease coverage by 0.09%.
The diff coverage is 93.10%.

@@            Coverage Diff             @@
##           master      #63      +/-   ##
==========================================
- Coverage   92.46%   92.36%   -0.10%     
==========================================
  Files          19       19              
  Lines         491      498       +7     
==========================================
+ Hits          454      460       +6     
- Misses         37       38       +1     

Impacted Files	Coverage Δ
src/colspec.jl	100.00% <ø> (ø)
src/transforms/eigenanalysis.jl	78.94% <66.66%> (-0.69%)	⬇️
src/transforms.jl	97.82% <100.00%> (ø)
src/transforms/coerce.jl	93.33% <100.00%> (ø)
src/transforms/filter.jl	98.03% <100.00%> (+0.03%)	⬆️
src/transforms/functional.jl	88.37% <100.00%> (ø)
src/transforms/parallel.jl	91.80% <100.00%> (+0.27%)	⬆️
src/transforms/rename.jl	100.00% <100.00%> (ø)
src/transforms/select.jl	91.78% <100.00%> (+0.11%)	⬆️

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