gobject-introspection wishlist:
  - default arguments
          
Plan of action:
  - Functions/Methods
    - creating code objects on the fly??
  - Flags
  - Signals
    - C# style, button.Clicked += method
    - Allows easy introspection, eg for signalConnection in button.Clicked
  - Properties
    - object.property or object.props.property ?
      We'll have some namespace issues here, maybe something which we
      can delay for now, but a decision needs to be taken at some point
  - VFuncs
  - GObject integration
  - marking gtk.init as calledable, special case argc/argv.
  - Callbacks via ffi_prep_closure