The Compiler...

[yuri-kiss]

Overhauls the entire internals (for descending etc) of the compiler, this is much more than meets the eye.
This is built on TacoDiva's "next-next" compiler.

(This should ALL be done before merging)
Todo:

• (Obviously) Merge conflicts
• Compiler API
  • Initial API for blocks
  • Exports
  • Cleanup of some functions to use new API's better
• Native extension support for compiler API
  • Custom shape api
  • "dynamicChanges" boolean
  • registerSimple
• Inline block support
• "on branch end" support
• Object support
• Implement all of USB's blocks
  USB does not change or add to: Sound, Event or Sensing for ANY stack or inputs
  • Motion Updates
  • Looks Updates
  • Camera Category
  • Control Updates
  • Operator Changes
  • String Category
  • Data Updates
  • Procedure Updates and Changes
• Port base blocks
  • IR gen (inputs)
  • JS gen (inputs)
  • IR gen (stack)
  • JS gen (stack)
• isIterable and isBreakable
• Branch support for Procedures
• Pull down latest branch from TacoDiva's repo
• Clean up exports

Formality's:

• ESLint fixes
• Comment the new code
• Maybe get TacoDiva to take a look when we are done

Hat / Event blocks do not count as stack in this context
This relys on this GUI fix (Maybe USB only)
Unsandboxed/scratch-gui@52fff4c