2 allow to specify additional .rc on commandline
3 use framerate.c from libltcsmpte
4 allow to manually override/set drop-frame timecode
9 add skip-buttons to act on timecode not slider position.
10 dynamically create/name memory-presets.
11 fix rounding issues: or store stg[] start/end in Audioframes (int), not seconds (float)
12 extend video-fps select bar with drop-frame formats 29.97 != 30DF
13 font-config for SMPTE display.
17 allow to specify update freq / query screen-freq.
18 fixed-font spacing: use table and separate glyph for each cipher?! or freetype ?