Version bump and release for 0.17

changes/changelog.d/549.documentation

-Technical documentation of music federation (#549)

changes/changelog.d/551.enhancement

-Added a library widget to display libraries associated with a track, album and artist (#551)

changes/changelog.d/559.bugfix

-Fixed a few untranslated strings (#559)

changes/changelog.d/mr-template.misc

-Added a merge request template and more documentation about the changelog