Faceposer / Choreography Editor

This tool aims to implement a GUI to edit Source Engines VCD files, which
contain choreography data. The Source SDK ships with the HL Faceposer, but that
tool is terrible, windows only and broken in virtually every SDK release.

So, this tool aims to

* offer the same basic functionality (choreographing)
* be cross platform
* be less broken than Faceposer

This tool will most likely never replace all Faceposer functionality, as
Faceposer just does too much. The focus lies on simple event timing for now.