Added missing readonly properties to NetConnectionStatistics for sent/received/dropped message counts.
Added missing readonly properties to NetConnectionStatistics for sent/received/dropped message counts.

forestrf/lidgren-network-gen3,PowerOfCode/lidgren-network-gen3,lidgren/lidgren-network-gen3,dragutux/lidgren-network-gen3,SacWebDeveloper/lidgren-network-gen3,RainsSoft/lidgren-network-gen3,jbruening/lidgren-network-gen3