Update relationship chart.
Remove comments.
Fix NoMethodError.
Add position directives, update colours.
Remove unused block.
Rename methods for consistency.
Extract Dummy and Exit.
Raise NotImplementedError if caller tries to use Interface directly.
Fix NoMethodError.
Fix method call.
Dummy interface should implement these methods.
Implement interfaces and event loop;

Process now calls the initial state and event loop for each defined interface. A user will define an interface with an #input and #output which will be fired on each Process#main_sequence loop.
Merge pull request #6 from gavinlaking/twerks

Twerks