images.
- scripts/ppmdiff/ppmdiff.c (usage, main): ppmdiff now accepts the name
of an output file as the last argument
- scripts/ppmdiff/ppmdiff.c (shadow_diff, usage, main): a second set of
images can be specified that will only be scanned for changes, without
otherwise becoming part of the merged image
- scripts/schhist2web (pngdiff): specify output name as last argument of
ppmdiff
- scripts/schhist2web: use shadow images to mark changes only visible
in regular version also in thumbnails
- scripts/gitsch2ppm: extract schematics as PPM files from a specfific git
revision
- scripts/gitenealogy: show the commit history of a file, tracking renames
- scripts/ppmdiff/Makefile, scripts/ppmdiff/ppmdiff.c: compare two PPM
files and highlight differences
- scripts/schhist2web: generate a browseable graphical revision history
of schematics
