Bugfixes:

1) Fixed a bug that would erroneously remove a hopper if the item transfer was blocked by a locking plugin such as lockette.

New Features:
1) Added protection against players using enderpearls to phase through glass blocks. There is a notification for this protection however it is OFF by default as it can be kind of spammy if players are hurling pearls all over, their teleport is not stopped however their location is set to the center of the block rather than where the enderpearl hits to prevent them from being able to phase into/through glass blocks.
https://github.com/dniym/IllegalStack/wiki/PreventPearlGlassPhasing