----------------------
Added
^^^^^
* Implement a new public function to revert a patch.
* Support applying stacks of patches.
* Include the utf-8 shebang to all source files.
* Enforce Python 3 compatibility with the ``__future__`` module.
* Testing with Python versions 3.7, 3,8, and 3.9.
* Set the ``__all__`` attribute.
* Make use of styling and linting tools.
Removed
^^^^^^^
* Testing with Python version 3.3.
* Testing of the representation outputs.
Changed
^^^^^^^
* Update the setup file.
* Rework the project's metadata.
* Shorten docstrings for non-public functions.
* Make minor tweaks to the code.
* Use the ‘new’ string formatting method.
* Update the contact's email.
Fixed
^^^^^
* Fix ``__weakref__`` showing up in the doc.
* Fix the changelog reference.