Changes since the last release:
- fixed issue if PC changed when CPU is halted.
- fixed missing silence in WAV recordings.
- fixed bad WAV recordings under Linux x64.
- fixed refreshing debugger on reset or NMI.
- fixed PNG saving writing invalid images.
- fixed Atom media detection.
- fixed use of Atom Lite ROM when enabled in drive 1 slot.
- added keypad support for debugger number input.
- restored support for external SAASound library.
- moved ROM images to external files.