Import multiple gradebooks / Import gradebook for a course

[20wildmanj]

From 112:

As we set up 15-112 for the coming semester, we would like to produce our
own gradebook csv file which we then import wholesale into Autolab. As of
now, we can import grades per-assessment into Autolab, but we wish to
import the entire gradebook at once (in the same way that we can now export
the entire gradebook to csv, but we wish to import it from csv).
 
Is there any way to import an entire gradebook csv file in Autolab?
 
Alternatively, is there a way we can use automated scripts rather than
manually in the browser-based UI in order to import grades per-assessment
(because then we could have a script just import each assessment and thus
effectively import an entire gradebook)?