Add JSON/string decodability for versions
Add JSON/string decodability for versions

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