---------------------------
**Do not use this release.** An erroneous invocation of `bumpversion`
resulted in a Maven `pom.xml` that renders the Guacamole subsystem
`.war` file impossible to build.
* [Enhancement] Refactor course export/import logic. XBlock editable
fields are added as attributes to the <hastexo> element in a
vertical block. `hook_events`, `ports`, `providers` and `tests` are
exported to a separate xml file. This does not affect existing
deployed courses using the XBlock, but might possibly require some
tweaking to automated deployment pipelines that rely on import and
export.
* [Bug fix] Fix support for nested `<video>` elements.
* [Enhancement] Support `<markdown>` (from the
[markdown-xblock](https://pypi.org/project/markdown-xblock/)
package) as an additional nested element (in addition to `<html>`,
`<pdf>`, and `<video>`).