Blender Git Loki

New 'feature' for image/movie strips: Strobe

In the NKEY flying panel, you can set "Strobe" to something other than 1
for only displaying each nth picture of the strip. You know the effect
from movies :)

(I put this into the NKEY panel rather than as a effect because effects
only affect single frames (?) while this rather has to do with the
timing... like "Reverse")