feat(DASH): Add Label element. #432

Job	Run time
Settings / settings	1s
Lint / Lint	14s
Build docs / Build docs	29s
Official Docker image / Build	11m 32s
Test Linux distros / Matrix configuration	7s
Build and test / Matrix configuration	4s
Build and test / linux x64 Debug static	9m 21s
Build and test / linux x64 Debug shared	9m 30s
Build and test / linux x64 Release static	10m 34s
Build and test / linux x64 Release shared	10m 44s
Build and test / osx x64 Debug static	13m 38s
Build and test / osx x64 Debug shared	17m 1s
Build and test / osx x64 Release static	19m 24s
Build and test / osx x64 Release shared	14m 53s
Build and test / win x64 Debug static	14m 1s
Build and test / win x64 Debug shared	13m 52s
Build and test / win x64 Release static	17m 4s
Build and test / win x64 Release shared	16m 47s
Build and test / linux arm64 Debug static	10m 25s
Build and test / linux arm64 Debug shared	10m 2s
Build and test / linux arm64 Release static	10m 9s
Build and test / linux arm64 Release shared	9m 59s
Test Linux distros / Alpine	12m 0s
Test Linux distros / ArchLinux	11m 7s
Test Linux distros / CentOS	10m 34s
Test Linux distros / Debian	10m 40s
Test Linux distros / Fedora	10m 44s
Test Linux distros / OpenSUSE	10m 22s
Test Linux distros / Ubuntu	11m 20s
	4h 56m 38s

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