Java Edition 1.11-pre1

1.11-pre1 is the first pre-release for 1.11.

Blocks

 * Observer Blocks
 * Changed front (detecting side) texture to be an 'observing face'.
 * Same texture is used for facing up and down, although facing down: points with the top of the face towards north, and when facing up: points with the top of the face towards south.
 * The texture is a hybrid of the rejected observer texture (ObserverRejectedGraphics.jpg) for Pocket Edition, and the previous texture.
 * Texture was made by Tommasso Checchi (@_tomcc)
 * Redstone output side now blinks when it outputs power.

Items

 * Enchanted Books
 * Curse of Vanishing, Unbreaking (III) and Mending now appear in the tools as well as the combat tab of the Creative inventory.

Other

 * Introduced a warning message for Java version <8 players


 * Cleaned up translation files to no longer use %d