Check busy workers before broadcasting heartbeats.
add ability to use inproc instead of tcp for server-broker-worker
which enables zero-copy messaging
still use an instance context and make it avail to broker/worker and make inproc? public
Merge remote-tracking branch 'upstream/2-8-stable' into brian/check_your_self

Conflicts:
	lib/protobuf/rpc/servers/zmq/server.rb
Fix busy_worker_count.
Merge pull request #145 from brianstien/brian/check_your_self

Check workers before broadcasting heartbeats.
merge conf in default config of zmq server
default inproc to true
put broadcast_busy in cli options
Merge pull request #149 from localshred/abrandoned/inproc

Abrandoned/inproc
bump to 2.8.11
add backwards compat for busy and Thread
Merge pull request #151 from localshred/bdewitt/ruby_compat

add backwards compat for busy and Thread
Bump version 2.8.12
Merge branch '2-8-stable'

Conflicts:
	CHANGES.md