• Use the new libjodycode 2.0 API version handling system
• Dedupe is now attempted on read-only files (meant for BTRFS snapshots)
• The -C option can now accept power-of-two chunk sizes up to 256 MiB
• "Extensions" are now "feature flags" and some have changed
• OMIT_GETOPT_LONG is now NO_GETOPT_LONG (does anyone actually use this?)
• Linux-x86_64 can now build several multilib arches (x86_64, x32, i386)
• Various other under-the-hood code changes for libjodycode 2.0