Tags: thiblahute/pitivi

proxy: Use opus as default audio format instead of FLAC

GStreamer support is better

validate: Seeker is dead

Differential Revision: https://phabricator.freedesktop.org/D678

SAVING COMMIT

validate: Seeker is dead

Differential Revision: https://phabricator.freedesktop.org/D678

SAVING COMMIT

Convert playhead svg to grayscale

Differential Revision: https://phabricator.freedesktop.org/D668

Fix ungrouping and add grouping unit tests

Ungrouping selected clips now deselects all clips so that
user can notice clips are actually not selected

After grouping, add the new group to timeline.current_group
as it keeps being selected.

In the case were we group/ungroup right away,
make sure ungrouping does not recurse and ungroups
more than supposed to.

elements: Fix selection of groups

And add a test where we were getting:

  AttributeError: 'NoneType' object has no attribute 'get_children'

because of that.

tests: Cleanup tests and enhance common.py

undo/redo: group and ungroup actions fixed for GES.Group