Merge branch 'develop' into 'master'

0.2.5

Closes #22

See merge request !14
2 jobs for master in 1 minute and 42 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
failed #30165
docker
test

00:01:42

 
  Deploy
skipped #30166
docker
deploy
 
Name Stage Failure
failed
test Test
AssertionError: code

----------------------------- Captured stderr call -----------------------------
INFO:traitlets:Executing notebook with kernel: python3
INFO:traitlets:Executing notebook with kernel: python3
=========================== short test summary info ============================
FAILED tests/test_nbcourse.py::test_nbcourse_wrong_build - Failed: DID NOT RA...
======================== 1 failed, 20 passed in 22.55s =========================
ERROR: Job failed: exit code 1