Shotcut 21.06.29

What's new in this version:

Added:
- Speed parameter to the Timer video filter.
- keyboard shortcuts to switch between the stock layouts: Alt+1 through 6.
- Import button to Playlist. (Thanks, @hbtalha!)
- an Apply button next to Properties > Speed to improve workflow when using mouse wheel.

Fixed:
- playback may hang when playing different Playlist items.
- alpha presets in Export.
- a possible crash when changing Settings > Preview Scaling.
- a possible crash when using Crop: Source and Size, Position & Rotate filters on the same clip.
- Size, Position & Rotate filters not reloading.
- reloading Keyframes for a filter on Output.
- changing Properties > Color Range for a clip in the Source player.
- playhead moves to the beginning of the Timeline when dragging an image from Source.
- a proxy may used instead of the original when dropping from file manager to Timeline.
- Fade In/Out on Timeline may add filters in wrong order.
- a crash trying to make thumbnail for an invalid playlist item when loading a project.
- Playlist > Play After Open not working.
- missing proxies not generated for an opened project when Settings > Proxy > Use Proxy turned on.
- File > Export EDL creates empty file.
- Center bias in Crop: Source filter.
- a crash using Mask: From File and Size, Position & Rotate filters on the same color clip.
- the Export > H.264 High Profile preset was producing main profile on NVIDIA.
- a crash when using Paste after a File > Close or File > New.
- a Project name with a slash is accepted but fails.
- a possible crash when changing Settings > Theme.
- Mask: Simple Shape moves when deleting all keyframes: no longer allowed to delete the last keyframe; use the keyframe toggle button in the parameters area of Filters.
- maintaining the image center when reset Size, Position & Rotate > Zoom.
-ved using the mouse wheel to zoom in Size, Position & Rotate filter.
-ved the range of the new Zoom keyframe values when keyframes are changed or removed.
- custom Export preset may load with incorrect frame rate.
- Playlist > Replace may replaced with timeline and appear as and cause a crash if the Project player is active.
- inconsistent handling of keyframes when splitting a trimming a clip.
- high CPU usage and a long wait after multiple Stabilize analysis jobs.
- a crash when a Stabilize analysis (.stab) file fails to open.
- a crash when Stabilize > Accuracy is 9 or higher.
- remembering the last-opened folder when choosing Properties > Video > Custom... for a transition with video filter Mask: From File > File > Custom....