Note: This version differs a fair amount from the previous version and will
require significant work to get things working
- Python 3 only
- Rewrite slither for some workflow improvements
- various renames, though not always totally the same:
- g.s_data -> g._rq_data
- g.s_instance -> g._resource_instance
- pre_validation_transform() -> transform_record
- Resources now take classes for authorization/validation etc