v2.1.0 Share links

burrow share makes a read-only link to any preview, and GitLab merge requests get their preview URL in the merge request widget.

feat:
burrow share <branch> makes a read-only link that expires after 72 hours
Pass --expires 7d for longer. Anyone with the link can look around; nobody needs a Burrow account, and nothing they do can change the preview.
feat:
GitLab merge requests show the preview URL in the merge request widget
Connect a project with burrow connect gitlab. Self-managed GitLab 16.4 and newer is supported.
fix:
burrow down no longer leaves an orphaned volume behind when the preview was asleep
perf:
Framework detection reads lockfiles instead of installing; cold starts are 1.8 s faster

upgrade

Run the install command again; it replaces the old binary. get the install command

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