schema cleanup

[allanhortle]

• [x] new syntax
• [x] object/array literal notation
• [x] Schema shorthand notation
• [x] Value / Id schema
• [x] Schema: Use plain class syntax
• [x] Schema: Rename definition to shape
• [x] Schema: Flatten options on to class. (Keep the two argument syntax)
• [x] Schema: Remove immutable methods. (Let people mutate the schemas)
• [x] Schema: Kill the class hierarchy (make the flow less complicated)
• [x] Schema: Replace denormalizeFilter with a deleteEntity function (Structural Schemas still filter DELETED_ENTITY)