• 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