Liauth v0.1.57

Fix Vim search and repeated n/N stopping after switching documents or toggling Vim.

The cause was stale jump-list bookmarks: positions from a previous document could throw an error when used against a shorter document. Retired bookmarks are now invalidated, while active bookmarks, registers, mappings, and search state are preserved.

Verified with regression tests and a native WebKit before/after reproduction. macOS packages are available for Apple Silicon and Intel; update through Check for Updates….