Release 3

• Now includes an embedded copy of MAME (and SDL2 framework).
• MAME is current (as of yesterday) but was custom-built to only include apple2-related machines.
• Slightly-improved error reporting if mame can't run

Release 2

• add command-Return as key equivalent for Launch button
• add command-R as key equivalent for Reset Slots button.
• decrease the vertical size of the window.

Release 1

Initial version.