EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
EDITING DELEGATE: webViewDidChange:WebViewDidChangeNotification
When a user puts the caret at the very beginning of a blockquote and hits backspace, if the line before the blockquote is empty, the blockquote should just move up.
| <blockquote>
|   style="margin: 0px; padding-left: 25px; border-left: 3px solid blue; color: blue;"
|   type="cite"
|   <span>
|     id="test"
|     "<#selection-caret>foo"