v0.8

• Support 'SD Music Deluxe' Mockingboard compatible card (#5).
  • and other cards with a single 6522 mapped to both $00 and $80 (like Echo+).
• Improve 6522 Test-1 for IIgs so that it doesn't hang and extend the TIMER1 period from $303 to $404 (#6).
• Removed version 'beta' tag.