Fixed a bug that could introduce data corruption to GIFs that use "Restore to Previous" frames
Improved colour reduction for GIFs that use more than 255 colours. A Smaller GIF makes no visible changes whatsoever for GIFs that use 255 colours or less (the result is pixel-for-pixel equivalent to the original; the compression is "lossless"), but for GIFs that use more than 255 colours, A Smaller GIF modifies the GIF to use 255 colours. The improvement introduced in version 1.22 reduces the visual distortion caused by colour reduction. Future versions of A Smaller GIF may allow users to employ "lossy" compression.
