Moved large number of client-related classes to com.jenjinstudios.net package.
Moved all number of client-side message to com.jenjinstudios.message package.
Moved several classes from com.jenjinstudios.message to com.jenjinstudios.io
Moved WorldClient class into com.jenjinstudios.world
Moved World-related ExecutableMessage classes into com.jenjinstudios.world.message
Moved test files to better packages
Moved server-side ExecutableMessage classes to com.jenjinstudios.message
Moved server-side World ExecutableMessage classes to com.jenjinstudios.world.message
Moved WorldServer classes to com.jenjinstudios.world
Moved server-side Server related classes to com.jenjinstudios.net