First version of the whats new [skip CI]
First version of the whats new [skip CI]


Former-commit-id: 71048d3c0834dbd0c97a54a13b18115be0ebcb05 [formerly 5e65d5a276ada0f0c075aa44f8d82869a8ec0f1a]
Former-commit-id: 230b85192431815f8360324f11db16e65693c759
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine