Cluster improvemts (anthdm#182)

* Unique actors cluster wide

* cluster improvements

* better tests

Remote buffer size config (anthdm#187)

* increase buff limit

* buff size as configuration

[BUG FIX] Message not delivered to Processor (anthdm#174)

* fixed inbox bug

* trigger  build

* increased timeout duration

* trigger build

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Co-authored-by: TheTGKing <[email protected]>

Fix spawning actors with duplicate id bug (anthdm#164)

* fixed duplicate id bug

* response holds error and returns it properly

* reverted changes to response

* trigger-build

* moved proc.Start() to registry.add()

* improved unit test

Fix race condition during actor startup sequence (anthdm#160)

* fixed race condition on actor context when starting the actor

* added test case and fixed bug

* added extra protections against race conditions

* removed sleeps from Test_StartupMessages

Polishing cluster (anthdm#146)

* Polishing cluster

* test selectMemberFunc

Merge dev into master (anthdm#45)

* Stop the ticker when calling stop on SendRepeater

* replaced GGQ with RingBuffer implementation

Unstable (anthdm#28)

* Fixed CPU usage caused by polling inboxes

* fixed padding in ggq

* README updates

* doc fix

* more doc updates and fixes

* fixed bug where processes did not cleanup when reaching max restarts

* Added SetOutput for the logger

Fixed CPU usage caused by polling inboxes (anthdm#27)

fixed shared global between ggq's, runtime lock back on (anthdm#24)