Bug Fixes

• Fix visited links turning dark purple in Night Mode (thanks @larsjohnsen)
• Fix Keyboard Nav not blurring focused links when navigating to another thing (thanks @larsjohnsen)
• Fix Hide Child Comments “automatic” option collapsing nested comments by default (thanks @larsjohnsen)
• Fix being unable to reply after collapsing child comments (thanks @larsjohnsen)
• Fix Hide Child Comments not always collapsing expandos in hidden comments (thanks @larsjohnsen)
• Fix Source Snudown in modmail (thanks @larsjohnsen)
• Fix “unhide” links being replaced with “hide” links (thanks @larsjohnsen)

Housekeeping / Other

• Clean up some build infrastructure installation (thanks @mc10)
• Add integration tests for Hide Child Comments (thanks @erikdesjardins)

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