CONTRIB-4909 Altered the certificate_scan_image_dir function to be more robust
CONTRIB-4892 Fixed the email to others functionality
Removed use of the deprecated function 'notify'
Tidy up of lib.php
CONTRIB-4067 - Query user table for necessary fields only to avoid 'column ambiguously defined' error in Oracle
Bumped the version required as the last commit uses a function that was introduced in 2.6
CONTRIB-4960 - Ensure grade item exists to avoid 'Invalid argument supplied for foreach()' error

Thanks to David Balch for reporting this and providing a patch.
CONTRIB-4961 - Allow certificate types to specify if they want the grade to have a prefix or not

Thanks to David Balch for reporting this and providing a patch.
Increased version number
Replaced $module with $plugin in version.php
Updated version required
CONTRIB-5244: Fixed idnumbers missing from exports
CONTRIB-5193: Fixed issues with the complete activity report
CONTRIB-5193: Fixed use of the certificate_print_user_files() call in the report
CONTRIB-5250: Removed duplicate user fields from SQL query
Version bump
Revert "CONTRIB-5193: Fixed issues with the complete activity report"

This reverts commit d3fe98b8aa23df0a8e2fa534e5569fb8a7366048.

Reverting this as there may be users who are using this function in custom code.
Revert "CONTRIB-5193: Fixed use of the certificate_print_user_files() call in the report"

This reverts commit 17ea3b3944f98e51eceaf2df384ab4d0a6584dc9.
CONTRIB 5193: Fixed call to certificate_print_user_files()
CONTRIB-4946: Removed character from language file breaking AMOS