Java Edition 20w16a

20w16a is the twelfth snapshot for Java Edition 1.16, released on April 15, 2020, which adds piglins bastions, and a new music disc.

Additions

 * Added bastion remnants.
 * Added ruined portals.
 * Added chain blocks.
 * Added a new music disc titled "Pigstep" by Lena Raine which can only be found in bastions.

Changes

 * Increased the amount of lava pools on basalt deltas.
 * The Piglin banner pattern can now be found in bastions.
 * Added a button in the GUI that generates a jigsaw structure starting from the jigsaw block, using given generation depth.
 * Expanded the max size per axis of Structure Blocks from 32 to 48.
 * Added a JMX MBean to monitor dedicated server tick times