stats: port stats_events to es6
stats: port stats_events to es6

burakkp/clappr,clappr/clappr,flavioribeiro/clappr,irongomme/clappr,Pyrotoxin/clappr,Pyrotoxin/clappr,shakin/clappr,flavioribeiro/clappr,leandromoreira/clappr,Peer5/clappr,tarkanlar/clappr,shakin/clappr,Metrakit/clappr,tarkanlar/clappr,tjenkinson/clappr,shakin/clappr,burakkp/clappr,Peer5/clappr,flavioribeiro/clappr,leandromoreira/clappr,tjenkinson/clappr,Peer5/clappr,wxmfront/clappr,MariadeAnton/clappr,Pyrotoxin/clappr,jfairley/clappr,wxmfront/clappr,wxmfront/clappr,irongomme/clappr,kelonye/clappr,MariadeAnton/clappr,dayvson/clappr,tarkanlar/clappr,Metrakit/clappr,tjenkinson/clappr,burakkp/clappr,Metrakit/clappr,irongomme/clappr,MariadeAnton/clappr,dayvson/clappr,jfairley/clappr,clappr/clappr,kelonye/clappr,jfairley/clappr,leandromoreira/clappr,dayvson/clappr,kelonye/clappr,clappr/clappr