In case of multiple cursors (selections) in the same line, an
annotation was created per selection, resulting in an odd experience.
Filter out duplicated lines by the line number.

Add author to CHANGELOG and README

Fixes: #2346

Refs #1606

- opens popover on subscription changes
- adds button to dismiss popover

- adds popover with features message
- adds ability to toggle views layout
- rearranges GL+ features section content
- swaps plus and integrations sections
- moves restore GL+ to GL+ features banner
- adds side bar close button

- uses global storage instead of workspace storage
- fixes _pendingContext.preferences
- updates autolinksExpanded optimistically in UI

- adds committer info
- ensures focus is restored on long-running updates
- prevents offscreen rows from being rendered
- appends entries to the DOM instead of a DocumentFragment

Co-authored-by: Eric Amodio <eamodio@gmail.com>