2.11.0

• Add a Scheme mode.
• Add a replace method to search cursors, for cursor-preserving replacements.
• Make the C-like mode mode more customizable.
• Update XML mode to spot mismatched tags.
• Add getStateAfter API and compareState mode API methods for finer-grained mode magic.
• Add a getScrollerElement API method to manipulate the scrolling DIV.
• Fix drag-and-drop for Firefox.
• Add a C# configuration for the C-like mode.
• Add full-screen editing and mode-changing demos.