Upgrade to slf4j 1.6.6.
Upgrade to slf4j 1.6.6.

bentatham/metrics,mnuessler/metrics,cirrus-dev/metrics,scullxbones/metrics-scala,kevintvh/metrics,rexren/metrics,gburton1/metrics,signalfx/metrics,mspiegel/metrics,valery1707/dropwizard-metrics,tempredirect/metrics,mt0803/metrics,mattnelson/metrics,mveitas/metrics,infusionsoft/yammer-metrics,egymgmbh/metrics,fcrepo4-archive/metrics,slovdahl/metrics,chenxianghua2014/metrics,randomstatistic/metrics,ChetnaChaudhari/metrics,dropwizard/metrics,jplock/metrics,ind9/metrics,timezra/metrics,infusionsoft/yammer-metrics,wfxiang08/metrics,ohr/metrics,mveitas/metrics,jasw/metrics,fcrepo4-archive/metrics,mtakaki/metrics,erikvanoosten/metrics-scala,Banno/metrics,thelastpickle/metrics,wickedshimmy/metrics-scala,dropwizard/metrics,unitsofmeasurement/metrics,gburton1/metrics,AltitudeDigital/metrics,maciej/metrics-scala,slachiewicz/metrics,dropwizard/metrics