* Remove actor handle ID from main ActorHandle constructor
* Set the actor caller ID when calling submit task instead of in the actor handle
* Remove ActorHandle::Fork, remove actor handle ID from protobuf
* Make inner actor handle const, remove new_actor_handles
* Move caller ID into the common task spec, start refactoring raylet
* Some fixes for forking actor handles
* Store ActorHandle state in CoreWorker, only expose actor ID to Python
* Remove some unused fields
* lint
* doc
* fix merge
* Remove ActorHandleID from python/cpp
* doc
* Fix core worker test
* Move actor table subscription to CoreWorker, reset actor handles on actor failure
* lint
* Remove GCS client from direct actor
* fix tests
* Fix
* Fix tests for raylet codepath
* Fix local mode
* Fix multithreaded test
* Fix AsyncSubscribe issue...
* doc
* fix serve
* Revert bazel