CCBUG: 357322

CCBUG: 355825
CCBUG: 356643

CCBUG: 356564

BUG: 356345

Fix audiothumbnails crash. Now we process audio thumbs one by one instead of creating dozens of threads, better for hard drives.

Fix crash on undo delete effect in Bin

BUG: 354601

CCBUG: 354553

Requires ffprobe (path must be set in Kdenlive Settings > Environment)
Untested with avprobe
* Cleanup marker handling
* Allow multi-selection in Clip Properties - Makers tab
CCBUG: 350716

BUG: 353021
Better message in effect effectlist context menu
BUG: 353020
Fix Bin effects sometimes broken (parameters not updated)

* Fix play action playing wrong monitor
* Fix Movit crashes
* Fix Movit thumbnails for title clips
* Might Fix some titles crashes
BUG: 352823

BUG: 351720

Getting the correct video creation date is possible through exiftool but
There is no standard so we should parse for many different tag names
hoping to get the correct one.. still thinking about it.
CCBUG:352263

BUG:351713