`:has` selector support for Firefox #193

Job	Run time
Repository Manager / Repository Manager / Branch Rename	0s
Repository Manager / Repository Manager / Commands	0s
Repository Manager / Repository Manager / Debug	0s
Repository Manager / Repository Manager / Branch Cleanup	0s
Repository Manager / Repository Manager / Issue Locking	5s
Repository Manager / Repository Manager / Label Sync	0s
Repository Manager / Repository Manager / Release	0s
Repository Manager / Repository Manager / Update Files	0s
	5s

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