https://github.com/dankamongmen/notcurses/milestone/1
- visibility=hidden by default, control exports via API macro (#56)
- signal handlers for INT, QUIT, and WINCH. they can be turned off via option (#27)
- decode AVFrames (#61)
- complete ncplanes API: movement in xy, resize, movement in z, styles (#11), destroy (#26),
- slider demo (#67)
- render z-buffer (#1)
lots of work. we're getting there.