v0.3 - detection persistence and speedups

Add a minimum detection time for faces - once a face is detected, it will be covered for several frames at least. Helps avoid spurious uncovering of faces or sudden flashing on/off of obscured regions.

Speed up the processing somewhat by changing the sub-projections to have fewer regions with less overlap.

v0.2 Preview - video support

Add preliminary support for processing input videos through GStreamer

Initial preview release - Windows 64 build

A binary Windows build of the command line utility that can process a single JPEG image.