speed up feasibility checks for spectral norm cones

[chriscoey]

No description provided.

[codecov]

Codecov Report

Merging #778 (b00597a) into master (ba0b3fa) will increase coverage by 0.21%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #778      +/-   ##
==========================================
+ Coverage   92.00%   92.21%   +0.21%     
==========================================
  Files          53       54       +1     
  Lines        8094     8327     +233     
==========================================
+ Hits         7447     7679     +232     
- Misses        647      648       +1     

Impacted Files	Coverage Δ
src/Cones/Cones.jl	97.24% <ø> (ø)
src/Cones/arrayutilities.jl	99.45% <100.00%> (ø)
src/Cones/epinormspectral.jl	100.00% <100.00%> (ø)
src/Cones/epinormspectraltri.jl	100.00% <100.00%> (ø)
src/Cones/epipersepspectral/matrixcsqr.jl	99.72% <100.00%> (ø)
src/Cones/epitrrelentropytri.jl	100.00% <100.00%> (ø)
src/MathOptInterface/cones.jl	98.74% <100.00%> (+0.03%)	⬆️
src/Cones/epirelentropy.jl	97.99% <0.00%> (-0.41%)	⬇️

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