Simplified BaseSeismicSource.sample_ruptures now that we can
Simplified BaseSeismicSource.sample_ruptures now that we can


Former-commit-id: 774758fdcb3356111b3b6b04dd521b31abda08ec [formerly 0472370e8bcde64419532acd26cd2cf641e5a3db]
Former-commit-id: 55bf771fa9f433209ae3fe7dc2f37a8caa4531c1
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine