Always flush async output before exit
Always flush async output before exit

Resolves #162.

flovilmart/Carthage,NachoSoto/Carthage,0xced/Carthage,flovilmart/Carthage,0xced/Carthage,flovilmart/Carthage,abbeycode/Carthage,abbeycode/Carthage,NachoSoto/Carthage,NachoSoto/Carthage,abbeycode/Carthage,erichoracek/Carthage,erichoracek/Carthage,0xced/Carthage,erichoracek/Carthage,erichoracek/Carthage,abbeycode/Carthage