Bundled fixes [SEE DESC]

* Fixed pickups spawning in an incorrect position from a JukeBox
* Pickups make a popping sound in Prtcl1.7
* Arrows make a *what sort of sound does an arrow make anyway‽* when
hitting a block, and a popping sound when fired
* Mobs again have metadata
* Fixed Prtcl1.7 not using valid JSON to kick a client
* Minecarts and arrows again have metadata
Bundled fixes [SEE DESC]

* Fixed compiler warning in Monster.cpp
* Future proofed particle effects
* Improved pickups, made less jittery
Bundled fixes [SEE DESC]

* BoundingBox now returns FACE_NONE
+ Arrows can be picked up
* Arrows dug up resume physics simulations
* Added sound effects for bows, lava to stone, and arrows
* Fixed SoundParticleEffect on <1.7 protocols
Merge remote-tracking branch 'origin/fixes'.