Kwargs data and unsafe_length

[kescobo]

Fixes a couple of things that have deprecation warnings on nightly.

kwargs.data -> values(kwargs) (see JuliaLang/julia#39448)

and

Base.unsafe_length -> length (see JuliaLang/julia#40382)

[codecov]

Codecov Report

Merging #76 (535df98) into master (add8f06) will increase coverage by 0.89%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master      #76      +/-   ##
==========================================
+ Coverage   67.65%   68.55%   +0.89%     
==========================================
  Files          29       29              
  Lines        2288     2245      -43     
==========================================
- Hits         1548     1539       -9     
+ Misses        740      706      -34     

Impacted Files	Coverage Δ
src/axis_array.jl	76.21% <100.00%> (ø)
src/named.jl	57.81% <100.00%> (+1.75%)	⬆️
src/abstractarray.jl	91.30% <0.00%> (-0.59%)	⬇️
src/linear_algebra.jl	87.66% <0.00%> (-0.24%)	⬇️
src/AxisIndices.jl	40.29% <0.00%> (+0.29%)	⬆️
src/struct_axis.jl	85.71% <0.00%> (+1.00%)	⬆️
src/arrays.jl	85.49% <0.00%> (+1.32%)	⬆️
src/offset_axis.jl	71.73% <0.00%> (+1.52%)	⬆️
src/centered_axis.jl	61.19% <0.00%> (+1.77%)	⬆️
... and 5 more

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[Tokazama]

Thanks!

[kescobo]

Pleasure!