Added shutdown method to NetConn and NetListener
Removed shutdown methods
Added NetConn.set_timeout
Added VERR_TIMEOUT
Added missing message for VERR_TIMEOUT
Replaced old verr_raise(VERR_SYSTEM) with verr_raise_system()
Added threading sub library (ThreadPool is broken)
Rewrote ThreadPool (now it works as far as I can tell)
Changed the way ThreadPool environments are allocated
Updated PoolWorker's comment
Removed v_malloc and v_realloc