### Bug fixes

Fix a bug that would cause the content DOM update to crash in specific circumstances.

Work around an issue where, after some types of changes, Mobile Safari would ignore Enter presses.

Make iOS enter and backspace handling more robust, so that platform bugs are less likely to break those keys in the editor.

Fix a regression where Esc + Tab no longer allowed the user to exit the editor.

### New features

You can now drop text files into the editor.