Update isort from 4.2.14 to 4.2.15 (#1963)
Update isort from 4.2.14 to 4.2.15 (#1963)


pfreixes/aiohttp,KeepSafe/aiohttp,Eyepea/aiohttp,rutsky/aiohttp,pfreixes/aiohttp,arthurdarcet/aiohttp,arthurdarcet/aiohttp,hellysmile/aiohttp,playpauseandstop/aiohttp,rutsky/aiohttp,arthurdarcet/aiohttp,KeepSafe/aiohttp,hellysmile/aiohttp,KeepSafe/aiohttp,rutsky/aiohttp