Added
* Add a hacky fix for a race condition in AbstractFrames. We should try to fix this more robustly.
* Add `index` to CategoryTree
* Add `ignore_class_idxs` to CategoryTree.decision
* Add `always_refine_idxs` to CategoryTree.decision
Changed
* Rework construction of CocoDataset.hashid
* Invalidate the CocoDataset.hashid on modification
* CategoryTree now prefers coerce over cast
Fixed
* Fix issue with modifying CocoDataset subsets
* Fixed CategoryTree.decision when the tree is rooted
* Fix torch incompatibility in CategoryTree.decision