Release 0.9.5

All opcodes test pass now. Some issues remain:

• The "Stars" demo by Sergey Nydenov does not display correctly. I'm not sure why.
• Games run at superspeed; this makes them difficult to play. I need to research the proper clock speed for these emulators. This might also cause the delay timer test to fail if you try it...
• Keypad mapping may be incorrect.