improve predorcent stepper

[chriscoey]

@lkapelevich

[codecov]

Codecov Report

Merging #631 (61ed23a) into master (f524134) will decrease coverage by 0.01%.
The diff coverage is 97.82%.

@@            Coverage Diff             @@
##           master     #631      +/-   ##
==========================================
- Coverage   96.07%   96.05%   -0.02%     
==========================================
  Files          45       45              
  Lines        6695     6700       +5     
==========================================
+ Hits         6432     6436       +4     
- Misses        263      264       +1     

Impacted Files	Coverage Δ
src/Solvers/steppers/predorcent.jl	91.04% <96.55%> (-0.63%)	⬇️
src/Solvers/steppers/common.jl	100.00% <100.00%> (ø)
src/Solvers/steppers/heurcomb.jl	84.81% <100.00%> (ø)
src/Solvers/linesearch.jl	96.66% <0.00%> (-3.34%)	⬇️
src/Solvers/Solvers.jl	92.11% <0.00%> (-0.04%)	⬇️
src/Cones/Cones.jl	92.48% <0.00%> (-0.03%)	⬇️
src/Hypatia.jl	100.00% <0.00%> (ø)
src/ModelUtilities/ModelUtilities.jl	100.00% <0.00%> (ø)
src/Cones/wsosinterpepinormone.jl	96.79% <0.00%> (+0.64%)	⬆️

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[chriscoey]

fixed a bug with centering correction RHS that only affected predorcent stepper