Remove attach limits v2.2 changes: Fixed issue with Unfurl links being replied to.
Remove attach limits v2.0 changes: Now will show embedded attach bbcode if attachment is broken.
Remove attach limits v1.9 changes: Now works with XF v2.2 or newer.
Remove attach limits v1.8 changes: Now compatible with PHP 7.4.
Remove attach limits v1.7 changes: Fixed issue with not being able to show thumbnails.