2.12.0

• Add a SPARQL mode.
• Fix bug with cursor jumping around in an unfocused editor in IE.
• Allow key and mouse events to bubble out of the editor. Ignore widget clicks.
• Solve cursor flakiness after undo/redo.
• Fix block-reindent ignoring the last few lines.
• Fix parsing of multi-line attrs in XML mode.
• Use innerHTML for HTML-escaping.
• Some fixes to indentation in C-like mode.
• Shrink horiz scrollbars when long lines removed.
• Fix width feedback loop bug that caused the width of an inner DIV to shrink.