Released ckmame 1.1

• Read-only 7z support.
• Improve detector support.
• Bump mamedb version. All mame.db files need to be regenerated.
• Follow MAME in expecting disk images in subdirectories.
• Remove broken support for checking samples.
• Convert to C++17.

Download release:

• ckmame-1.1.tar.xz

• ckmame-1.1.tar.gz