LinearProblemSolver

[KnutAM]

Creates a special "nlsolver" for linear problems that avoids re-assembly of stiffness to check if the problem converged. This PR introduces the following changes in addition

• Change order of handle_converged and postprocess! (postprocess! is now first)
• Adds kwargs to update_problem! and send nothing instead of requiring default argument for user. With this change, the user should now define FEProblems.update_problem!(p::MyProblem, dx; kwargs...), and potentially using the bool kwargs: update_jacobian and update_residual (to avoid updating when not required)

[codecov-commenter]

Codecov Report

Merging #13 (12d1052) into main (ba6f6b7) will increase coverage by 0.39%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main      #13      +/-   ##
==========================================
+ Coverage   94.07%   94.47%   +0.39%     
==========================================
  Files           8        8              
  Lines         152      163      +11     
==========================================
+ Hits          143      154      +11     
  Misses          9        9              

Impacted Files	Coverage Δ
src/FESolvers.jl	100.00% <ø> (ø)
src/problem.jl	77.77% <ø> (ø)
src/QuasiStaticSolver.jl	95.83% <100.00%> (ø)
src/nlsolvers.jl	97.91% <100.00%> (+0.61%)	:arrow_up:

:mega: We’re building smart automated test selection to slash your CI/CD build times. Learn more