Corrected debug logging in WrapperSocket#_handleRequest().
Changed socket debug logging to trigger off config.DEBUG_SOCKET instead of config.DEBUG.
Added missing semicolon.
Respect the LOG_LEVEL environment variable.
Added the `linearVelocity` and `angularVelocity` properties to PhysicalEntity.
Schedule updates whenever target velocities change, and don't schedule full updates as often.
Merge pull request #9 from SkewedAspect/dbronke-network-improvements

Network improvements