CONTRIB-4472 Removed all file I/O operations from plugin constructor
CONTRIB-4472 Add config to control response code on error
CONTRIB-4472 Add e-mail notification of message processing errors
Fix user updates to include username changes. Add auth_shibbuncif awareness
Update post.php to indicate no cookies used - no session needed. Update create_course to match course/lib.php in Moodle 2.5
Fix lack of assignment to $rc when unenrolling users
Update $plugin->version, adjust required Moodle version for 2.5, add RELEASE.txt, add include for repository lib
Correct assignment of classname in case of bad task argument passed in
Align release no. with 2.2 branch, but specify for MOODLE_25_STABLE