calcs/hazard/classical/core:
calcs/hazard/classical/core:

Abstract the hazard curve calculation into a plain function and lightweight
task wrapper function.

This will allow us to use the hazard curve computation code in a more
general way.


Former-commit-id: 72217691ffb81efd6029cddce27a3d8a8e7911c8
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine