This works more or less the same as for machine instances. The code was copied from version 2.1 of the unserialise function of profiles, and optimised a bit. The output function is written from scratch. It has some code duplication. Maybe we have to do something about that.
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.