Prevent unstarted modules stopping assignment update.
Global tiipp variable added so Androgogic offline mode doesn't crash moodle assignment.
Hard errors changed to soft errors when the cron is run.
Remove submissions after 5 submission attempts if assignment exists in Turnitin.
Change ordering of submissions to get most recent first in update scores.
Inclusion of grade lib file moved to top of lib file due to isolated reports of cron failing.
Multiple attempts are handled properly.
Comments added for editing $submissions in get_links()
Allow for attempts when grading - get latest grade rather than just looking for single record.
Ignore NULL grades when working out overall grade in PP
Docs & version numbers incremented.
Incorrect calculation of average grade in PP fixed.
Fixed incorrect rounding of average grades in PP
Revert "Fixed incorrect rounding of average grades in PP"

This reverts commit 81ef871c970039a341beb33f660a66bca95be6ae.