- institution var in user_config
- import user_institution module in config?
+** TODO [#B] Improve change_database, change_course, change_assignment, etc. :ui:
+ - edge case: should not have to retype db path if provided on CLI
+ but no database exists there yet
+ - implement current_courses option
+ - incremental search for course, assignment?
+ - calculate_all_grades interface to loop over all current courses
** f890cef9d: grading/db.py: fix bug in select_students giving duplicate rows
- problem was join: a student can appear in multiple courses, so