derive new CPTReader class from object
derive new CPTReader class from object


Former-commit-id: 48862c76acad5415e2230b5735e03046ff998c19 [formerly 52292edc71b13179650cc479432202616c62b5d2] [formerly 52292edc71b13179650cc479432202616c62b5d2 [formerly 438e1f4de235b5b8eaf5bff6c6674cbe2c6c021c]]
Former-commit-id: 1f89db87bcaa3ccb5cfbd81f0375253d4ae225c9
Former-commit-id: e6a7afca38954167b8d8736661a30f0a15c878a9
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine