Third prerelease of the Kordac converter.
Adds support for the following processors:
- `heading`
- `iframe`
- `interactive`
- `scratch`
- `table-of-contents`
Fixes:
- Kordac now orders tags correctly in the markdown pipeline.
- System tests for multiple calls to Kordac and for multi-line templates.
- Glossary tags now correctly store slugs for the Kordac result as per documentation.