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- Accepts directory names: ``imgdiff dir1/img.png dir2/``.
- Centers images relative to each other if they have different width/height.
- Automatic orientation (--auto) uses the golden ratio (1:1.618) as its goal
for desired height:width instead of a 1:1 square.
- New experimental options: --highlight (-H) and --smart-highlight (-S).
These highlight areas that are different and fade out areas that are
similar. Or at least they try.
- New options for tweaking the output: --bgcolor, --sepcolor, --spacing,
--border, --opacity.
- New option: --eog as alias for --viewer eog, but shorter. Guess what
desktop environment I'm using. ;-)
- A puny "test suite", runnable with imgdiff --selftest.
- Better source code documentation via docstrings.