EDIT:
These changes have been merged back to main mkpsxiso repository and are also available at https://github.com/Lameguy64/mkpsxiso/releases/tag/v2.0

A near-complete rewrite of mkpsxiso with fixed bugs, added features, and improved efficiency, also with isodump integrated into the same codebase under a new name dumpsxiso.

• Added tinyxml2 as a submodule, so manual installation is no longer needed and built binaries will always be statically linked.
• Add dumpsxiso the successor to isodump. Use dumpsxiso to unpack .bin isos and mkpsxiso to repack.
• Make xml file paths relative to the XML.
• Unify CDDA tracks and DA files to reflect the reality DA files are just links to CDDA tracks by LBA.
• Add <pregap> element to <track> for specifying the pregap. dumpsxiso attempts to be intelligent about guessing the pregap.
• Add <dummy> element to specify non-file sectors in an ISO in order to preserve LBA order
• Add packing flac, pcm, and mp3 files as CDDA tracks/DA files in addition to wav. dumpsxiso can extract as wav, flac, and pcm.
• Add memory mapped ISO writing to improve packing speed
• Fix directory records spanning more than 1 sector
• dumpsxiso: add group by directory/pretty xml writing
• Fix ECC and timestamp bugs
• Massive refactor and cleanup, too many fixes and changes to list, see the commits for details