LifterLMS Version 3.16.6

February 7, 2018

Removed reliance on PHP Hashids Library in favor of a simpler solution with no PHP module dependencies
Added interfaces to allow customization of quiz url / slug
Fixed shortcodes added to quiz question descriptions
Fixed untranslatable strings on frontend of quizzes
Fix issue causing certificate notifications to display as empty
Fix issue preventing quiz pass/fail notifications from triggering properly for manually graded quizzes
Fix undefined index warning on quiz pass/fail notifications