* Introduce message-dispatch rate limiting

read messages based on available-message-rate-permits

add admin command

add message-rate + byte-rate options for dispatch-rate limiting

policies on global-zk + combined msg/byte rate + reset rateLimiter-timeUnit

* address comment

* Updates headers with ASF source files header

* change license to additional files

* Add max per-broker unacked message limit

* default disable perBrokerMaxDispatcher limit

* replace LongAdder with atomicInteger to track per-broker unack messages

* Introduce new load manager API

* Fix formatting and style issues

* Fix imports

* Add back renamed classes

* Add policies to ModularLoadManagerImpl

* Make system resource usage more influential

* Fix reflective setting of load manager in tests

* Conform with mockito syntax

* Improve formatting and design

* Revert to old simulation behavior, use reflective interface design

* Remove unnecessary async call

* Fix formatting

* Remove git merge remnant

* Refactor some classes and put loadManagerClassName in dynamic conf

* Delete LoadSimulationServer

* Clean API, share more code

* Remove redundant synchronized block, make correction to onUpdate

* Fix policy filter bug

* Remove availableActiveBrokers.get() call

* Use connection pooling

* Remove unused code

* Don't try reading the symlink and converting to absolute path

* Remove redundant and unnecessary statments

* Add test back to see if path contains /virtual/

* Replace System.out statements with log.info

* Change %s to {}

PR from @sschepens  + tests and few fixes from @merlimat

* Add binary-protocol lookup url in documentation

* add webServiceUrl and brokerServiceUrl to clientTools

* Fallback to old version serviceUrl property for clientTools

Add unack-message threshold to restrict consumer for receiving messages without acknowledging-msg up to the threshold (#48)

Fixes #23