Support Swift 4

[lhatier]

Hi there,

I would like to know if this project still be updated or not? If yes, is it possible to get a version for Swift 4? I've got an error during the compilation of the project using Carthage, it might be the explanation...

Many thanks

[evandorn]

Swift 4 support would be much appreciated as Apple is killing support for Swift 3 in the near future.