add isPromise function
add isPromise function


Discordius/Telescope,VulcanJS/Vulcan,Discordius/Lesswrong2,Discordius/Telescope,Discordius/Telescope,Discordius/Lesswrong2,VulcanJS/Vulcan,Discordius/Lesswrong2,Discordius/Lesswrong2,Discordius/Telescope