Upstream has released updates that appears to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing
Bukkit Changes:
78568d11 Tweak Block.getTemperature to return actual block temperature
9ad459ca SPIGOT-2151: Add support for getting simple bounding box of a block
ad28b19f Add BlockData#getAsString(boolean) to hide unspecified states
CraftBukkit Changes:
1b982fd6 Tweak Block.getTemperature to return actual block temperature
f55c8191 SPIGOT-2151: Add support for getting simple bounding box of a block
4b843638 Add BlockData#getAsString(boolean) to hide unspecified states
Spigot Changes:
573cdf2c BUILDTOOLS-425: Disable commit.gpgSign in applyPatches.sh
667bdd6b Deprecate Spigot version of Entity.isInvulnerable
Updated Upstream (Bukkit/CraftBukkit/Spigot)
Bukkit Changes:
2dcc44dc SPIGOT-4307: Fix hacky API for banners on shields
e0fc6572 SPIGOT-4309: Add "forced" display of particles
efeeab2f Add index to README.md for easier navigation
f502bc6f Update to Minecraft 1.13.1
CraftBukkit Changes:
d0bb0a1d Fix some tests randomly failing
997d378d Fix client stall in specific teleportation scenarios
b3dc2366 SPIGOT-4307: Fix hacky API for banners on shields
2a271162 SPIGOT-4301: Fix more invalid enchants
5d0d83bb SPIGOT-4309: Add "forced" display of particles
a6772578 Add additional tests for CraftBlockData
ce1af0c3 Update to Minecraft 1.13.1
Spigot Changes:
2440e189 Rebuild patches
4ecffced Update to Minecraft 1.13.1
The key can be retrieved via methods Location#toBlockKey() and
Block#getBlockKey()
World provides lookup for blocks by long key via method World#getBlockAtKey(long)
The formatting for the key is as follows:
10 bit y|27 bit z|27 bit x
The y value is considered unsigned while z and x are considered two's complement
Y range: [0, 1023]
X, Z range: [-67 108 864, 67 108 863]
Checked encoding and decoding via https://gist.github.com/Spottedleaf/74f4e241012ca2fa67d8f1c7e8e34722