Mpegdash

What's Changed
* Drop support for EOL Python 2 by a-detiste in https://github.com/sangwonl/python-mpegdash/pull/61

New Contributors
* a-detiste made their first contribution in https://github.com/sangwonl/python-mpegdash/pull/61

**Full Changelog**: https://github.com/sangwonl/python-mpegdash/compare/0.3.1...0.4.0

What's Changed
* Fix Lint issues by davemevans in https://github.com/sangwonl/python-mpegdash/pull/58
* Added missing support for endNumber inside MultipleSegmentBase by wreszelewski in https://github.com/sangwonl/python-mpegdash/pull/57

New Contributors
* wreszelewski made their first contribution in https://github.com/sangwonl/python-mpegdash/pull/57

**Full Changelog**: https://github.com/sangwonl/python-mpegdash/compare/0.3.0...0.3.1

What's Changed
* Support non-standard label attribute by bvc3at in https://github.com/sangwonl/python-mpegdash/pull/33
* clarifies profile vs profiles by thenewguy in https://github.com/sangwonl/python-mpegdash/pull/37
* Added selectionPriority to AdaptationSet by thenewguy in https://github.com/sangwonl/python-mpegdash/pull/35
* Add KID attribute to the Descriptor class by Jayapraveen in https://github.com/sangwonl/python-mpegdash/pull/38
* Improve ignored files and folders by rlaphoenix in https://github.com/sangwonl/python-mpegdash/pull/42
* Dont use a Bare except on urllib import by rlaphoenix in https://github.com/sangwonl/python-mpegdash/pull/43
* Replace single char re alternation with char class by rlaphoenix in https://github.com/sangwonl/python-mpegdash/pull/44
* Use ImportError, Swap unittest import order by rlaphoenix in https://github.com/sangwonl/python-mpegdash/pull/46
* Optimize README by rlaphoenix in https://github.com/sangwonl/python-mpegdash/pull/51
* Prettyprinter clean up, typos, redundancy by rlaphoenix in https://github.com/sangwonl/python-mpegdash/pull/45
* Use GitHub Actions CI by rlaphoenix in https://github.com/sangwonl/python-mpegdash/pull/50
* Fix wrong parsing of vector-typed attribute by sangwonl in https://github.com/sangwonl/python-mpegdash/pull/48
* Fix current flake8 warnings by davemevans in https://github.com/sangwonl/python-mpegdash/pull/56
* Run unit tests and fail on failure in Github Action by davemevans in https://github.com/sangwonl/python-mpegdash/pull/55
* Add support to parse cenc tags by Karthik-0 in https://github.com/sangwonl/python-mpegdash/pull/54

New Contributors
* bvc3at made their first contribution in https://github.com/sangwonl/python-mpegdash/pull/33
* thenewguy made their first contribution in https://github.com/sangwonl/python-mpegdash/pull/37
* Jayapraveen made their first contribution in https://github.com/sangwonl/python-mpegdash/pull/38
* rlaphoenix made their first contribution in https://github.com/sangwonl/python-mpegdash/pull/42
* Karthik-0 made their first contribution in https://github.com/sangwonl/python-mpegdash/pull/54

**Full Changelog**: https://github.com/sangwonl/python-mpegdash/compare/0.2.0...0.3.0

Fix
Use correct case for xsboolean
Support elements which only contain basic text contents

Feature
Add method to output mpd as a string, and associated test
Add messageData attribute to Event
Add UTCTiming support