Java Edition 1.9.1-pre2

1.9.1-pre2 is the second pre-release for 1.9.1.

Changes

 * Tweaking of cooldown mechanics.
 * Shields no longer take damage when blocking weak attacks (less than damage).
 * The title of the inventory of Minecarts with Chests and Minecarts with Hoppers now match the item's name.

Fixes

 * Other fixes:
 * Fixed crash in pathfinding code