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

Classical hazard calculator now makes use of the `hc` property (for accessing
the HazardCalculation).


Former-commit-id: 4e6d315e0c863a6d6cc714fb338462b2d4406908 [formerly 4e6d315e0c863a6d6cc714fb338462b2d4406908 [formerly b1fa28b540581ee21ae7db43d75b53db190885c4]]
Former-commit-id: 6a33411dd2b3520a3e6dccfdc696a4be26db2b8f
Former-commit-id: 7de74c6063384c4e3a34c5b239f6ef22e9b98a30
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine