Less naive implementation of widgetsRepo.getByElement - always returns most inner widget.
Extracted constants from function, removed unnecessary safety check.
Added sample for nested widgets.
Simplified and optimized editor.widgets.getByElement().
Changelog entry.
Merge branch 't/11983'
Fixed: Caret possibly out of viewport if pressed BACKSPACE/DEL and Webkit/Blink custom handler is involved.
Changelog entry.
Merge branch 't/11960'
Changelog and API docs cleanup.
Fixed: No context menu entry on right-click in Webkit/Blink (Mac).
Made the code more straightforward.
Changelog entry.

Conflicts:
	CHANGES.md
Merge branch 't/11306b'
Fixed changelog entry.
Fixed: Alignment labels inside of Image2 dialog are not translated.
Updated language files with new missing keyword.
Changelog entry.
Merge branch 't/11957'
Added basic support for merging blocks on BACKSPACE/DEL in Webkit when selection is not collapsed.