"Batch Add" feature makes it easier to catalog a bunch of removable disks (thanks sfish for the suggestion). MacOS: While Batch Add is activated, any disk inserted into the computer will be automatically cataloged and then ejected if possible. Windows: Automatic detection of disks inserted into the computer is not supported, instead you click a button to check for new volumes.
Can now use color schemes. Copy a Color Scheme file into the same folder as DiskCatalog, and rename it to exactly "ColorScheme.dat". Then open DiskCatalog, and it should be using the new color scheme.
Windows: Second-click any minimize button to minimize the program to the system tray. The item in the taskbar also has a proper icon now.
Remember window locations/size when reopening program.