Removed QtWebKit and WebVfx (HTML5 components) from all builds.
Upgraded Qt to version 5.15.1 on Linux and Windows and version 5.12.9 on macOS. As a result, the minimum macOS version is 10.12.
Updated Linux build to a Ubuntu 18.04 base (glibc version 2.27).
Completely new Windows build based on msys2, and discontinued the 32-bit build.
Migrated Windows and Linux builds to GitHub Actions, and automated builds of AppImage and snap for Linux.
Improved the performance of the Fade In Video, Fade Out Video, and Brightness filters on multicore systems.
Added Invert audio filter.
Added showing the job progress in Windows taskbar button. (thanks @lolametro!)
Added converting Text: HTML filters to Text: Rich. This does not retain full fidelity, but hopefully it retains the text.
Added using the H.264 hardware encoder if HEVC not available when Proxy > Use Hardware Encoder is on.
Added Scroll to Playhead on Zoom option to Timeline menu.
Added ability to change position in Size, Position & Rotate by dragging anywhere inside the rectangle while also holding <kbd>Shift</kbd>.
Added rectangle VUI help tips for various video filters.
Improved Text: Rich filter export on Windows and Linux when display scale is fractional (e.g. 150%).
Fixed time rulers hiding on vertical scroll in Timeline and Keyframes.
Fixed moving the cursor in filter fields may move playhead.
Fixed Filters allowed pasting filters when nothing selected.
Fixed saving projects to Dropbox on Windows leaves temporary files.