* craft-gif: bounded frame decoding through the image crate (feature frames)
* craft-webp: bounded frame decoding through the image crate (feature frames)
Like craft-gif's: every frame composited, a still as one frame, canvas cap
checked from the headers, stops at the frame or byte limit or at a damaged
frame and says which, optional merging of identical frames.
One walk over a GIF's blocks, without decompressing pixels: the logical
screen, each frame's position, delay, disposal and transparent colour, the
loop count and the first frame's colour table. Replaces PhotoCraft's two
block walkers and gives the other apps a header-only animation probe.
Dylan M. Taylor