Added additional utilities for starting drones and getting world object

Adds "getWorld(name)" to utils so you can do something like "utils.getWorld("world").setStorm(true);" to turn on storms in the world named "world".

Also added some handy ways to start a drone: here(), lookAt(), and atPlayer(name).  eg. "here().firework()" to start a firework where you are, or atPlayer("herobrine").cylinder0(blocks.stone,5,5); to lock Herobrine in a tower.