Issue #143 Fixing Ehcache.putIfAbsent to return previous value
Issue #143 Actually track the installement
Merge pull request #144 from alexsnaps/issue-143

Issue #143 Fixing Ehcache.putIfAbsent to return previous value
issue-118: exposed statistics via jmx beans
issue-118: wired in latency
issue-118: fixed test
fixed latency conversion
proper exception handling
refactored
fixed api
wired stats for more cache accessors
issue-118: code review changes