Memex Extension - 3.18.4

Also includes versions 3.18.1 - 3.18.3 due to review hick-ups with the new Manifest V3 releases and having to resubmit it twice.

Quality of life improvements:

• When importing bookmarks it will also now create the same sub-folders from your browser bookmarks

• Add back behaviour to Youtube timestamp to click for current time, and shift+click for range selected in range selector

Fixes

• Fix imports broken after MV3 updates

• Fix title edits being broken

• Fix importing of bookmark files from Pocket etc being broken

• Fix clicking on the annotation card to scroll to the highlight