denial '77 alpha 2 binaries

Lots of experiments, lots of "it's not quite working and I don't want to go to a 2 line kernel here just yet" moments. Still learning :)

Added auto-play for title / attract mode.
Next: enemy attack logic

This version seems to cause problems for Stella (and the previously mentioned javascript emulator)...

denial '77 alpha 2 (PAL)
denial '77 alpha 2 (NTSC)

RAM used: 63 bytes (65 remain)
ROM used: 2035 bytes (2061 remain)