### Bug fixes

Forbid widget decoration side values bigger than 10000, to prevent them from breaking range ordering invariants.

Fix a bug where differences between widgets' estimated and actual heights could cause the editor to inappropriately move the scroll position.

Avoid another situation in which composition that inserts line breaks could corrupt the editor DOM.

### New features

Inline widgets may now introduce line breaks, if they report this through the `WidgetType.lineBreaks` property.