next/prev commands - search for patterns in element attributes as well. Currenty optimized for Gmail
Better check for Google g_editable in isElementEditable that fixes some issues in Gmail
fix recursion in isElementGoogleEditable impl
Merge pull request #341 from akhodakivskiy/next-prev-matching

next/prev commands
Document commit 1b874f1b7b3
Use a `WeakMap` in `utils.Bucket`