Merge pull request #813 from bavc/1.3.1-release #424

Job	Run time
build-macos-no-brew-Qt6 (clang-9)	27s
build-macos-no-brew (clang-9)	1m 24s
build-macos-brew (clang-9)	2m 35s
build-macos-brew-Qt6 (clang-9)	1m 20s
build-linux (gcc-9)	7m 7s
build-linux-Qt6 (gcc-9)	8m 35s
build-windows-mingw (5.15.2)	6m 39s
build-windows-mingw-Qt6 (6.3.0, qtmultimedia qt5compat)	7m 40s
build-windows-vs (5.15.2)	7m 30s
build-windows-vs-Qt6 (6.3.0, qtmultimedia qt5compat)	9m 28s
	52m 45s

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