Enhance Code Generation Options

[KingOfBrian]

The current code generation is as simplistic as I could get away with. It should:

• [ ] Add support for Stencil to manage the high-level code structure.
  • [x] Move statements out of the document and onto Reference
  • [x] Add properties to access different configuration phases
• [ ] Support for blocks beyond what a template will provide
  • [ ] Add support for nested statements
  • [x] Variable name override