This is a bug fix release with no features added.
Main changes: various fixes to the new group mode feature (CONTRIB-5976, CONTRIB-6110, CONTRIB-6210), prevent student from booking if appointment limit reached (CONTRIB-5975), filters in notes fields (CONTRIB-6024)
This release is intended for Moodle 2.9, Moodle 3.0 and the upcoming Moodle 3.1.
N.B.: Not all acceptance tests will run successfully in Moodle 3.1 due to changes in Behat/Gherkin between Moodle releases.