Update changelog file prior to release.

Sync up to the relevant bits of master branch.

Declare a new release prior to requiring GStreamer 1.16.0 or later fo…

…r future work on Me TV. The MPEG-TS library is now available.

Declare a 3.0.8 release to try and get the release train from Travis-…

…CI to Bintray working as it should.

Declare version 3.0.7.

Create a new release so as to publish a version that doesn't panic on…

… closing a frontend window.

Declare a new bugfix release.

Amend version numbers prior to bugfix release.

Prepare a new bug fix release.

Prepare for new bug-fix release.