Add Eventloop.is_running() method
Add Eventloop.is_running() method

Indicates whether the event loop is currently running. If it's not it has
either stopped or is scheduled to stop on the next tick.

hjr3/mio,mlalic/mio,asomers/mio,tailhook/mio,fuchsia-mirror/third_party-mio,mneumann/mio,marjakm/mio,luca-barbieri/mio,echochamber/mio,alexcrichton/mio,carllerche/mio,yangxingpping/mio,bottompawn/mio,fuchsia-mirror/third_party-mio,yuikns/mio,rryan/mio,rrichardson/mio,thijsc/mio,greensnark/mio,fhartwig/mio,asomers/mio,dwrensha/mio,tempbottle/mio,pythonesque/mio,mneumann/mio,arthurprs/mio,dpc/mio,murarth/mio,zslayton/mio,danburkert/mio,geofft/mio,carllerche/mio,frewsxcv/mio