Add another TimeoutMap implementation, expand load test to provide
performance metrics.
Merge remote-tracking branch 'origin/timeouthashmap-redesign' into
timeouthashmap-redesign

Conflicts:
	jwamp-core/src/main/java/com/github/ghetolay/jwamp/utils/NewTimeoutMap.java
	jwamp-core/src/main/java/com/github/ghetolay/jwamp/utils/OldTimeoutMap.java
	jwamp-core/src/test/java/com/github/ghetolay/jwamp/utils/TimeoutHashMapLoadTest.java