Merge pull request #253 from maxim-belkin/error-out
authorRaniere Silva <raniere@rgaiacs.com>
Thu, 17 May 2018 20:44:43 +0000 (21:44 +0100)
committerGitHub <noreply@github.com>
Thu, 17 May 2018 20:44:43 +0000 (21:44 +0100)
lesson_check.py: Exit with a status of 1 if something was wrong


Trivial merge