Removed ButtonCommand

Removed WarpProtection

Removed player ability permissions: ...

- ability.player.chat
 - ability.player.blockbreak
 - ability.player.blockplace
 - ability.player.useitem
 - ability.player.useblock
 - ability.player.attack

Added UndoableOnce util

Merge branch 'atomic' into 'master' ...

Removed basic commands.

See merge request !3

Removed basic commands.

Removed keep-inventory on out-of-world death

[optim] Optimized memory usage for structureMap

[optim] Optimized memory usage on world save ...

- Don't copy off-heap chunk data to the heap. Copy to off-heap too
- Use exact size of NBT maps and lists where possible
- On chunk save used koloboke map for NBTTagCompound (uses less memory). Also possible to use koloboke map for all NBT objects wit system property "org.ultramine.core.nbt.useKolobokeMap"

Fixed possible ConcurrentModificationException - copy ItemStack NBT on writeToNBT

Added a hook for anti-x-ray (not implemented in the core) ...

The hook allows to (async) change chunk contents before sending

[optim] Optimized memory usage on chunk send

[client] Issue #50 Fixed singleplayer permissions

Merge branch 'stable'

Issue #51 new off-heap chunk storage ...

- service-based implementation
  - allocate memory on request an delayed release on chunk unload
  - added experimental optional minecraft 1.8 chunk memory layout
      (-Dorg.ultramine.chunk.alloc.layout=8)

[optim] Optimized some World methods by using getChunkIfExists instead of chunkExists + getChunkFromChunkCoords

[optim] Optimized RecipeCache - don't clear full cache on overflow - remove only oldest (by usage) entries

[optim] Optimized RegionFileCache - don't clear full cache on overflow - remove only oldest (by usage) entries ...

Also fixed possible deadlock

Update player chunk send queue on server coord changes (don't await client packet) ...

1. It is an optimization because we don't rebuilding chunk list on each player packet
2. It is an improvement because we don't awaiting client packet on player server coord change (like teleportation)
3. It is a fix because some client mods don't send coord update packet to server before first chu packet handling

[refactoring] Reformatted @InjectService usages

Issue #52 Service-based economy API, economy commands & default currency moved out of the core

Added sync server executor and some utils for CompletableFuture-based commands support ...

- Added sync server executor that executes runnable in it's "execute" method if it is called from main server thread or delegate execution to nextTick otherwise

Issue #49 Added undoable service registration, lazy service provider switching, thread-safe ServiceManager

Added undoable API

Issue #49 ServiceStateHandler

Merge branch 'stable' into master ...

# Conflicts:
# src/main/java/net/minecraft/world/WorldServer.java
# src/main/java/net/minecraft/world/chunk/Chunk.java

[buildscript] Replace version in annotations (used in mods build)

Disable entity updating in worlds with disabled chunk loaders and no players ...

(previously 'enableChunkLoaders' option was ignored in this context)

Fixed Entity & TileEntity unloading in worlds with 0 active chunks (memory leak on world generation)

Prevent teleportation while riding entity