Update compatiibility
Update compatiibility

I know the repo hasn't had much activity, but there hasn't been any need to make changes. Things are running just fine on most versions. Here is a minor update just to let you know things are still working in moodle 3 :)
get-smarter/moodle-api,getsmarter/moodle-api,getsmarter/moodle-api,get-smarter/moodle-api