This is a bugfix release for the 2.7 branch. No new features have been added.
Main fixes: several issues in teacher view with multi-appointment schedulers; timezone issues (CONTRIB-5300, CONTRIB-5478), restore issue with pre-1.9 versions (CONTRIB-5496)
This release should also be used for Moodle 2.9 installations until a 2.9 branch of Scheduler is released.