0.20.0

• Dump isoinfo in favor of the native cdfs crate to parse IRD ISO headers
• Add a -x flag to import-roms to extract top-level archives before importing their contents
• Allow ordering CHD compression algorithms
• Use the new splitbin feature in chdman 0.265+, fixes Dreamcast CHD imports
• Add a new import-patches subcommand
• Add a new create-dats subcommand
• Fix special chars handling in 7z
• Make the ROM directory portable by storing relative paths internally
• Optimize the database upon exiting
• Add support for CHD HD and LD formats
• Allow importing multi-track CHDs without a CUE file (requires chdman 0.265+)
• Use mimetype infering using file magic where possible
• Add support for disk tags in the MAME CHDs DAT
• Apply GROUP_SUBSYSTEMS to custom system names as well
• Autodetect MAME DATs as arcade and remove the -a flag in the import-dats subcommand
• Iterate over all hash algorithms when matching and checking roms in all subcommands
• Remove the HASH_ALGORITHM setting
• Add support DATs with no size information such as the MAME CHD DATs
• Parse CHDs data SHA1 and match against it first where applicable when importing CHDs
• Support importing MAME CHDs based on the CHD SHA1 contained in the DAT (aka not the actual data SHA1)