Progress on tutorial, gap tweaking (water flows faster from room to room), UPnP error messages, input keys in array, underwater aiming tweaking, tons of misc stuff commit more often ffs

Lidgren.Network/NetReceiverChannelBase.cs

@@ -0,0 +1,18 @@
+using System;
+
+namespace Lidgren.Network
+{
+	internal abstract class NetReceiverChannelBase
+	{
+		internal NetPeer m_peer;
+		internal NetConnection m_connection;
+
+		public NetReceiverChannelBase(NetConnection connection)
+		{
+			m_connection = connection;
+			m_peer = connection.m_peer;
+		}
+
+		internal abstract void ReceiveMessage(NetIncomingMessage msg);
+	}
+}