move adjoint outside of loop

[vincentcp]

#240

[codecov-io]

Codecov Report

Merging #241 into master will increase coverage by 34.49%.
The diff coverage is 100%.

@@             Coverage Diff             @@
##           master     #241       +/-   ##
===========================================
+ Coverage   56.03%   90.52%   +34.49%     
===========================================
  Files          17       17               
  Lines        1740     1077      -663     
===========================================
  Hits          975      975               
+ Misses        765      102      -663

Impacted Files	Coverage Δ
src/svdl.jl	92.64% <ø> (+33.49%)	⬆️
src/lsqr.jl	97.67% <100%> (+61.77%)	⬆️
src/lsmr.jl	100% <100%> (+67.37%)	⬆️
src/stationary_sparse.jl	84.54% <0%> (+11.88%)	⬆️
src/history.jl	92.42% <0%> (+17.11%)	⬆️
src/simple.jl	85.71% <0%> (+20.84%)	⬆️
src/gmres.jl	93.22% <0%> (+23.6%)	⬆️
src/stationary.jl	87.09% <0%> (+25.02%)	⬆️
src/cg.jl	95.34% <0%> (+30.26%)	⬆️
src/orthogonalize.jl	100% <0%> (+31.25%)	⬆️
... and 10 more

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