FEATURE: Actions support

[Ricci Adams]

See "Chapter 5: Actions"

I have no intention to add this :) This issue exists to document the lack of action support. There would be several sub-issues here:

• SWF3 action model
• SWF4 action model
• SWF5 action model
• SWF6 action model
• SWF7 action model
• SWF9 action model
• SWF10 action model
• Clip events
• Button events
• Keeping all of the action code in #if preprocessor blocks so that it wouldn't compile into the iOS build