- Updated table cell background color setting to be stable by
specifically using the background property over the general styles.
- Updated format shorcuts to be correct header levels as per old editor
and format menu.
- Updated format changes to properly update UI afterwards.
- Fixed errors with selection and range handling due to captions
existing.
- Updated TableNode change handling to update existing DOM instead of
re-creating, which avoids breaking an attached selection helper.
- To support, Added function to handle node change detection and apply
relevant dom updates for common properties.
