Merge branch 'master' into eheien-add-taper-method
Update tests to use specified Python executable
Added new tapering based on element depth

This should be the “correct” kind of tapering, where along fault
tapering only occurs near the fault ends
Merge branch 'eheien-add-taper-method'
Fixed MPI failure

Old code was going over all blocks, should just go over local blocks
Update test check
Spelling fix
Move max slip calculation into mesher
Added multi-fault tests