Fix bug in `Transform.setBlockType` when used in a transform that already has steps.
0.12.0
Breaking changes
Drops support for some undocumented options to the DOM serializer that were used by the view.
Bug fixes
When rendering DOM attributes, only ignore null values, not all falsy values.
0.11.0
Breaking changes
New module combining the node [specs](https://prosemirror.net/docs/ref/version/0.11.0.html#model.NodeSpec) from [schema-basic](https://prosemirror.net/docs/ref/version/0.11.0.html#schema-basic), and the list-related [commands](https://prosemirror.net/docs/ref/version/0.11.0.html#commands) from the commands module.