------------------- - `__init__` methods of `OpenClosable` subclasses no longer need to call `super().__init__()`
0.5.0
------------------- - Support Python 3.10 - Added `OpenClosable` base class for simple reentrant context managers
0.4.1
------------------- - Fixed the type annotation on `dirchanged()`
0.4.0
------------------- - Added `additem()` for temporarily adding a value to a sequence
0.3.0
------------------- - Support Python 3.9 - Gave `attrrollback()` and `itemrollback()` new arguments `copy` and `deepcopy` for storing copies of the specified attribute/item
0.2.0
------------------- - Added `dirrollback()`, `attrrollback()`, `itemrollback()`, and `envrollback()` for undoing changes to a value at the end of a `with` block