Daniel Pyrathon a1d4aa66bc feat(order_utils.py): schema resolver cache (#1317)
* Implemented basic functionality for using cache layer of LocalRefResolver

* Use `importlib` instead of `imp`, since it's been deprecated. Legacy `load_module()` reloads modules even if they are already imported, causing tests to fail when run in non-deterministic ordering, so we replace it with `import_module()`
2018-11-30 12:59:37 -05:00
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