## Enter key Test the Enter key support. ### Notes: * Expected behavior: * At the end of a heading should create a new paragraph. * In the middle of a heading should split it. * Shift+Enter should move the text to new line. * The selection should always be moved to the newly created block. * Select all + Enter should leave an empty paragraph. * Check: * Non-collapsed selections. * Integration with undo. * ~~Integration with basic styles~~ ([bug](https://github.com/ckeditor/ckeditor5-enter/issues/4)).