Updating Gitter room to room based on repository rather than organization
Updated Event truthy specs to check for explicit true/false.
Updated specs for TimerSet.
Removed redundant Event tests.
Fixed buggy Observable shared spec.
Refactored difficult thread pool test.
Refactored more difficult thread pool tests.
replace personal alias with full commands in update_doc.rake
add lazy register for actors
Moving lazy register under Concurrent adding docs
Fix Context logging
Adding dead letter routing
Allow to set custom Reference class
Fix broken Delay#value!

Use global_task_executor to perform the task be default. Use
immediate executor in configuration related Delays before
global_task_executor is up an running.
Add missing dependency of Future on IVar
Break up actor core into series of behaviors

add message redirecting
Add ability to link Actors

actor will get notified when linked actor fails