missing metadata for completed items

[mivanit]

I haven't run my code that depends on this library in a while, but there seems to have been a significant API change since then. The list returned by api.state['items'] no longer includes already completed items, and the only way to get these seems to be api.completed.get_all()['items']. However, when using the latter, lots of metadata (most significantly for me, due dates) is missing.

Is there a different method I should be using to get data about completed items, or is there no way to get this data through the API now?