Repaired onProfilePictureChanged event, added onProfilePictureDeleted
Update whatsprot.class.php
Update whatsprot.class.php
Typos fixed as well as incorrectly commented function name
added full path on the fopen(countries.csv) line, it doesn't change current behavior and it fix the problem if WhatsAPI is being used from other project/path
Update EVENTS.md

onGetRequestLastSeen return an array with 4 elements, not with 3!