fixes to ProductFun

[jishnub]

No description provided.

[codecov]

Codecov Report

Base: 70.50% // Head: 70.99% // Increases project coverage by +0.48% 🎉

Coverage data is based on head (f5f282c) compared to base (36fa310).
Patch coverage: 0.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #217      +/-   ##
==========================================
+ Coverage   70.50%   70.99%   +0.48%     
==========================================
  Files          77       77              
  Lines        8005     8008       +3     
==========================================
+ Hits         5644     5685      +41     
+ Misses       2361     2323      -38     

Impacted Files	Coverage Δ
src/Multivariate/ProductFun.jl	31.64% <0.00%> (ø)
src/Multivariate/TensorSpace.jl	73.88% <0.00%> (+6.86%)	⬆️
src/show.jl	83.20% <0.00%> (+0.79%)	⬆️
src/LinearAlgebra/helper.jl	64.38% <0.00%> (+0.22%)	⬆️
src/Fun.jl	69.28% <0.00%> (+0.34%)	⬆️
src/specialfunctions.jl	63.53% <0.00%> (+0.36%)	⬆️
src/Multivariate/VectorFun.jl	72.91% <0.00%> (+1.04%)	⬆️
src/Caching/matrix.jl	69.56% <0.00%> (+1.08%)	⬆️
src/Caching/almostbanded.jl	97.89% <0.00%> (+1.75%)	⬆️
... and 3 more

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