Mineflayer

* add inventory support
- add `Item` class which is exposed on `mineflayer`
- add `bot.inventory` (see docs for more details)
- add `bot.equip(itemType, destination, [callback])`
- add `bot.tossStack(item, [callback])`
* add digging support
- add `bot.startDigging(block)`
- add `bot.canDigBlock(block)`
* blocks: add `blockUpdate:(x, y, z)` event.
* add building support
- add `bot.placeBlock(referenceBlock, faceVector)`
* add `block.painting`
* add `Painting` class which is exposed on `mineflayer`
* add experience orb support
- `entity.type` can be `orb` now
- `entity.count` is how much experience you get for collecting it

* physics: skip frames instead of glitching out
* default bot name to Player - `createBot` can take no arguments now.

* physics: fix bug: walking too slowly on Z axis

* ability to sprint (thanks ruan942)
* fix color code stripping (thanks rom1504)
* event "onNonSpokenChat" deleted
* new event "message" which fires for all messages
* `bot.chat` no longer checks for "/tell" at the beginning
* add `bot.tell(username, message)` method
* fix crash when an entity effect occurs

* chat: no longer suppress "chat" events for your own chat (thanks Darthfett).
* ability to mount / dismount vehicles and attack
* physics: fix tall grass and dead bushes treated as solid
* fix "respawn" event firing twice sometimes
* remove `bot.spawn()` and `autoSpawn` option. auto spawn is now mandatory.
* fix sending spawn packet twice on init
* fix bots spawning with their heads on backwards
* fix bots jumping when they get hit
* update player heights when they crouch
* add support for signs: `block.signText` and `bot.updateSign(block, text)`

* add `bot.time.day` and `bot.time.age` and "time" event
* add `bot.entities` which is a map of the entities around you
* add `bot.look(yaw, pitch, force)` and `bot.lookAt(point, force)`