fix: deserialization of ElementType

[Braeulias]

Without this you get this error when creating client (client_login):

Error: Serde(Error("data did not match any variant of untagged enum Response", line: 0, column: 0))

[JeromeSchmied]

I'm afraid it still does the same for me

at least the get_timetable example

the view_timetable doesn't, unless I do something like println!("{:?}", client.classes()?);

[luleyleo]

Sounds reasonable

[Braeulias]

@luleyleo fixed formatting, should work now