SETERRQ[1-9]+ begone
Merge remote-tracking branch 'origin/release'
Merge branch 'hongzh/fix-irk-null-jacobian' into 'release'TSIRK: fix null jacobianSee merge request petsc/petsc!4679
Fix doc for TSIRK
TSIRK: fix null jacobianSNESGetJacobian() returns a null matrix in TSSetUp_IRK(). This fix changes it to TSGetIJacobian().Commit-type: bug-fix\spend 20mReported-by: Mattew Knepley
Minor
doc fixes
Implicit Runge-Kutta integrators
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