Start work on interactive commands (//help, //biomelist, //pos1/2)
Added clipboard and world remapping (between mcpe/pe)
//schematic remap
//anvil remapall
Added anvil -> leveldb converter (run Nukkit jar or /anvil2leveldb)
Added safe zstd decompressor
Angle mask fixes
Fix paste air issues with fawe format (which no-one uses anyway)
Fix cfi file:// with an absolute path
FIx schematic format and addBlocks
Update forge to 1.12
Fixes#663
Fix biome change not sending packet
Add optimized biome get and set (AsyncWorld, EditSession etc.)
Add undo for biome changes
Fix tile entities for slow (non NMS) bukkit queue
Translate some stuff
Fix some concurrency issues with autoqueue
cuboid region geChunks() now has fixed memory cost (applies to commands
e.g. //listchunks)
Fix some undo issues
