Adding Japan domain to the test cases.
Fix and test fragile adjoint source calculation.
Added test for finalizing adjoint sources in an unrotated domain.
Added test and fix for domain definitions during adjoint source
finalization. Somehow acausal...needs more tests!
Fixing non-deterministic test.
PEP8
Make sure no rotate function are actually called.
Adding test for adjoint source finalization with global and rotated
domain.
Test for a rotated domain and specfem globe.
Adjoint source finalization now also works for rotated spherical
sections with SPECFEM.