Nextgen Playground

[AlecRosenbaum]

WIP just playing around with some fun new patterns.

Goals of nextgen:

• support (but not require) passing around a context (to avoid global state checking)
  • context pattern must be compatible with sqlalchemy-based session management. i.e. pass in a session when validating
• composable/reusable fields and field validation logic
• annotation-based declarations for simple fields
• operate on/with type-checked objects that have good IDE/autocomplete support
• expose a type-checked interface
• cleanly support intra-schema field dependencies (i.e. one field can depend on the validated value of another)