Version 0.5.2

Windows binaries are now built as 64-bit.
Fixed display of usage message on Windows to show in a message box.

Version 0.5.1

Added new --per-page-pixel-tolerance option by @gstark.

Version 0.5

• Added new --dpi option that helps with ignoring small differences, particularly when combined with channel-tolerance. Thanks @bendablegears!
• Added --grayscale option to convert the diff output to grayscale and only use color for pixels with differences. This is useful for comparing documents that use colors and that may look confusing in the diff view.

Version 0.4.1

Fixes some bugs (#64, #65) that crept into 0.4. All users of 0.4 should update.
Thanks go to @alxckn and @pietvo for spotting and fixing the bugs.

Version 0.4

Added new useful options contributed by @fatalmind:

• --skip-identical only outputs pages with actual differences
• --channel-tolerance makes it easy to ignore tiny differences
• --mark-differences adds visual markers to the margin to highlight where small changes are

Version 0.3

Many accumulated fixes since v0.2.