- Update to 0.24.0:
* Added support for sup and sub tags to LaTeX and Markdown backends.
* Added support for @online entries and the urldate field.
* Fixed bugs in the example plugin.
* Fixed bad get_default_encoding() call.
* Reimplemented pybtex.utils.OrderedCaseInsensitiveDict using
collections.OrderedDict (so it has a __delitem__).
* unsrt.py now supports type when formatting phdthesis.
* Added from_string to pybtex.database.BibliographyData.
* Added from_string and to_string to pybtex.database.Entry.
* Preserve order in pybtex.utils.OrderedCaseInsensitiveDict.__repr__.
* Fixed entries with duplicate keys being removed during sorting.
* Fixed handling of duplicate person fields
* Use xml.etree.ElementTree instead of the deprecated cElementTree.
* Import base classes from collections.abc instead of collections.
* Use __iter__ instead of deprecated Element.getchildren().
- Switch to using pytest to run tests, and run the testsuite.