ensure we explicitly stop all watchers in main thread
ensure we explicitly stop all watchers in main thread

democracyworks/synapse,bcicen/synapse,StephanErb/synapse,yonglehou/synapse-1,freiheit-com/synapse,bobtfish/synapse,claydotio/synapse,airbnb/synapse,gini/synapse,hankya/synapse,johnmccabe/synapse,bobtfish/synapse,EasonYi/synapse,Yelp/synapse,lsjostro/synapse,jolynch/synapse,asiragusa/synapse,dallasmarlow/synapse,tdooner/synapse