usage: regolith classlist [-h] [-f FORMAT] [-d] [--db DB]
op filename course_id
positional arguments:
op operatation to perform, such as "add" or "replace".
filename file to read class information from.
course_id course identifier whose registry should be updated
options:
-h, --help show this help message and exit
-f FORMAT, --format FORMAT
file / school format to read information from. Current
values are "json" and "usc". Determined from extension
if not available.
-d, --dry-run only does a dry run and reports results
--db DB database name
