Alter Cormode paper link
Make documentation link to Cormode paper
Fix Gauge javadoc

The gauge docs incorrectly list value instead of getValue
Add test for Meter EWMAs approximation
make sure that EWMA intervals are adjacent
Merge pull request #442 from jmslagle/patch-1

Fix Gauge javadoc
Merge pull request #439 from ceetav/low_rates_ewma

Meter: EWMA deviates for low rates from the actual rate
Merge pull request #437 from GregBowyer/master

Update link for a none 404 Cormode paper