Gstreamer 1.0: merge !43 and !44 into gstreamer_python_upgrade (!76) · Merge requests · lscsoft / spiir

I've merged !43 (merged) and !44 (merged) in separate merges.

!43 (merged) merged without conflicts (and is all external scripts, I haven't checked if those need to be python3ified)

!44 (merged) required a number of manual changes which have been discussed in !63 (closed)

Gstreamer 1.0: merge !43 and !44 into gstreamer_python_upgrade