Pymediainfo

Bug fixes
* Succeed in fixing upload to PyPI from Travis (tests were broken by v5.0)

Bug fixes
* Travis: attempt to fix upload to PyPI

Breaking changes
* :warning: Drop support for Python 2.7, 3.4 and 3.5
* `MediaInfo.parse`: remove the deprecated `text` parameter

New features
* `MediaInfo`: add shortcuts to tracks by type: `audio_tracks`, `video_tracks`, etc. (95)

Miscellaneous
* Add type hints and a lot of code quality checks to the CI (pylint, mypy, black, etc.)
* Run tests with tox

:warning: This is the last major release that supports Python 2.7, 3.4 and 3.5. Version 5 will only support Python ≥ 3.6

New features
* `MediaInfo.parse`: add support for file-like objects (96)
* Update bundled MediaInfo to [v20.09](https://github.com/MediaArea/MediaInfoLib/releases/v20.09) (Windows and OSX wheels)
* Improvements to documentation
* Python 3.9 is now officially supported

Bug fixes
* Fix version detection for Read the Docs documentation builds

New features
* Add a new `output` option to the `parse` method, this deprecates the old `test` option (82)
* Update bundled MediaInfo to [v20.03](https://github.com/MediaArea/MediaInfoLib/releases/v20.03) (Windows and OSX wheels)
* Add support for os.PathLike objects (72)

Bug fixes
* Close and delete handle on errors to avoid memory leaks (79)
* Fix thread-safety that was broken since v4.1 (76 and 83), document multi-threading limitations
* Document Python 3.8 support
* Show the correct pymediainfo version in documentation builds