- version update to 4.2.2
Version 4.2.2
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* Fixing `default_box` doesn't first look for safe attributes before falling back to default (thanks to Pymancer)
* Changing from TravisCI to Github Actions
Version 4.2.1
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* Fixing uncaught print statement (thanks to Bruno Rocha)
* Fixing old references to `box_it_up` in the documentation
Version 4.2.0
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* Adding optimizations for speed ups to creation and inserts
* Adding internal record of safe attributes for faster lookups, increases memory footprint for speed (thanks to Jonas Irgens Kylling)
* Adding all additional methods specific to `Box` as protected keys
* Fixing `merge_update` from incorrectly calling `__setattr__` which was causing a huge slowdown (thanks to Jonas Irgens Kylling)
* Fixing `copy` and `__copy__` not copying box options
Version 4.1.0
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* Adding support for list traversal with `box_dots` (thanks to Lei)
* Adding `BoxWarning` class to allow for the clean suppression of warnings
* Fixing default_box_attr to accept items that evaluate to `None` (thanks to Wenbo Zhao and Yordan Ivanov)
* Fixing `BoxList` to properly send internal box options down into new lists
* Fixing issues with conversion and camel killer boxes not being set properly on insert
* Changing default_box to set objects in box on lookup
* Changing `camel_killer` to convert items on insert, which will change the keys when converted back to dict unlike before
* Fallback to `PyYAML` if `ruamel.yaml` is not detected (thanks to wim glenn)
* Removing official support for `pypy` as it's pickling behavior is not the same as CPython
* Removing internal __box_heritage as it was no longer needed due to behavior update
Version 4.0.4
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