emit thread, config file, unit tests
applied first round of code review comments
a bit more coverage for unit test
made the maximum number of samples we keep for timers adjustable in the constructor
make sure stats are emitted always, regardless of whether or not they are updated since last emit
applied code review comments
updated comment in ChangeLog
fixed comments
removed unused imports
final touch-ups
added 'sum' and 'count' to SamplesMessage
Merge pull request #3 from mohammadkolahdouzan/master

Nick okayed it, so merging, feel free to figure out how to  get this into maven repos.