Set the event priority of the following activity overrides:
* mod_assign
* mod_lesson
* mod_quiz
Always create separate events for start and end dates of activities.
dirname() is a slow function compared with __DIR__ and using
'/../'. Moodle has a large number of legacy files that are included
each time a page loads and is not able to use an autoloader as it is
functional code. This allows those required includes to perform as
best as possible in this situation.
Jun Pataleta