Bump test coverage

[nmheim]

No description provided.

[codecov-commenter]

Codecov Report

Merging #9 into master will increase coverage by 10.19%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           master       #9       +/-   ##
===========================================
+ Coverage   87.89%   98.08%   +10.19%     
===========================================
  Files           9        9               
  Lines         157      157               
===========================================
+ Hits          138      154       +16     
+ Misses         19        3       -16     

Impacted Files	Coverage Δ
src/fast_nau.jl	88.88% <100.00%> (+1.38%)	⬆️
src/fast_npu.jl	100.00% <100.00%> (ø)
src/nmu.jl	100.00% <0.00%> (+9.09%)	⬆️
src/npu.jl	100.00% <0.00%> (+10.16%)	⬆️
src/nalu.jl	100.00% <0.00%> (+23.52%)	⬆️
src/nau.jl	100.00% <0.00%> (+25.00%)	⬆️
src/nac.jl	100.00% <0.00%> (+36.36%)	⬆️

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