swmpc: macOS client written in Swift.

[CamilleScholtz]

I've been working on a new MPD client for macOS, would love to have some feedback and people testing it!

See: https://github.com/CamilleScholtz/swmpc

Note: I currently make use of some 0.24 functionality to handle playlists, though it should work with MPD 0.21+.