General

• Added ability to give extensions to users in the "invited" enrollment state.
• Changed student list from loading 10 at at time with pagination to loading all with scrolling.
• Renamed "filter" to "search"
• Change config template to use "staff" rather than "admin" and "student".

Bugfixes

• Fixed an issue where a change to headers in the "Get users in a course" endpoint of the Canvas API caused students to be displayed only if there were 10 or fewer in the course.

Backstage

• Switched from Travis CI to GitHub Actions
• Switched from Coveralls to Codecov
• Added CanvasAPI for some API calls
• Added test for accessing from a bad domain