v1.4.3

This is a hotfix release

Unfortunately right after v1.4.2 went out, I was informed of a regression from one of the pull requests. This wasn't noticed earlier even though it was up for testing on mastodon.social and glitch.social for a week. This is an important privacy bug (#3752) that we fixed immediately after being informed of it.

No special upgrade instructions are necessary. This release is otherwise identical to v1.4.2. Only the code needs to be updated.