They no longer mention the version number in their function names. I'd rather have named them import/export but that gave a name clash with Python's 'import' keyword.
Contributes to issue CURA-844.
This plug-in does nothing at the moment. It merely says that it is able to upgrade configuration from version 2.1 to 2.2, but then raises exceptions when you actually try to use it. This is by design. I will now implement the functions that do the conversion.
Contributes to issue CURA-844.