Java Edition 14w18a

14w18a is the twentieth snapshot released for 1.8.

Changes

 * Pistons & Slime Blocks
 * Connected to sticky pistons, slime blocks will now push and pull blocks beside them when moved by pistons
 * Connected to normal pistons, slime blocks will only push blocks, but not pull them
 * Coded by KaboPC and Panda4994
 * Up to 12 slime blocks connected to a piston in any arrangement can be moved as long as the following conditions are met: blocks do not disrupt the chain, non-moveable blocks are not in the way or slime blocks are not attached to the piston itself
 * Follows all the rules that pistons follow, for example blocks which can normally be moved by pistons can be moved if attached to slime blocks
 * Allows for more contraptions, from new redstone clocks, moving devices, farming etc
 * Extending a piston with a slime block on top of it will launch the entity (mobs, players, items, launched arrows etc) into the air

Fixes
From released versions before 1.8
 * – Creepers float one-eighth of a block above the ground.
 * – Wrong rendering order of particles, hitboxes, clouds, transparent blocks and breaking animations
 * partial fix: particles only
 * – Resource Pack Glitch on Shaders
 * – Torch not placeable on stained glass
 * – The bottom texture of non-full blocks is flipped vertically

From the 1.8 snapshots
 * – When only a Spectator stays near mobs, they don't despawn
 * – When you kill invisible horse variants, the screen will turn red/black
 * – It is possible to change the missing block model
 * – Pick block on hydrated farmland gives dirt block with invalid data value (missing texture)
 * – Burning Furnace (Block 62) Has Wrong Inventory Image
 * – water doesn't put burning silverfish out
 * – Rails render from below, but not correctly
 * – Lapis-Lazuli Ore Pick Block

From the previous snapshot
 * – Any stone slabs ontop of one another creates a double stone block
 * – Respawn button does not work if spawnpoint is outside of the worldborder
 * – Sheep give other color when sheared
 * – Maximum value for the /worldborder command too low (30 million instead of 60 million)
 * – Player takes damage when world border is nearer than 179 blocks
 * – redstone overlay gets tinted
 * – Singleplayer menu: only one click loads world
 * – The worldborder stops the player one block further away from the center in south/east direction
 * – Unable to create/load new heavily customized world
 * – Can place blocks outside world border.
 * – missing string:
 * – Redstone gives off no particles when being broken
 * – Scrollbar in all lists act weird/unresponsively
 * – Sliders have incorrect values causing world to never be created
 * – Minecraft crashes when setting FixedBiome to hell
 * – Lava lceans setting does not work in customized world type
 * – Barrier particles fight for attention
 * – Crafting wool/clay/glass/dog collars results in the wrong colour.
 * – River generation dramatically increased in default world generation.
 * – Double-clicking server in server list no longer does anything