Release v1.5.2, December 2022

Compatible with A-plus v1.15 (June 2022) and later at least until v1.17 (November 2022).

Changes:

• Added min-group-size and max-group-size options to the assignment directives submit and questionnaire. (#70)
  • Default group sizes may still be set in conf.py as before with the settings default_min_group_size and default_max_group_size.
• In the directive lineref-code-block, fixed an issue that caused incorrect warnings Line reference labels should be unique when the course was built again without first deleting the previous output from the _build directory.

Release notes:
https://apluslms.github.io/releases/v1_17.html