check if workers are avail in zmq client/server
set uri lookup to 1/50 second
make val a string if we assign a symbol to a string field
make sure the address frame is sent back to the router
change to single byte message payloads for the protocol
and call the feature "first alive load balancing"
check all servers every 1/10th of second 50 times before
failing out on requesting
make acceptable line up with encode rules
Merge pull request #181 from localshred/bdewitt/string_to_symbol

make val a string if we assign a symbol to a string field
Merge pull request #183 from localshred/bdewitt/check_workers_avail

Bdewitt/check workers avail
Bump version 2.0.0.rc2
Fix block shadowed var in logger middleware spec
Make sure protobuf message's have required the full library
Revert "Make sure protobuf message's have required the full library"

This reverts commit d7674c738a21b50f07d66d2c8940451d0bedbbcf.
Bump version 3.0.0
Refactor logging