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/Encryption/INetEncryption.cs

@@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+
+namespace Lidgren.Network
+{
+	/// <summary>
+	/// Interface for an encryption algorithm
+	/// </summary>
+	public interface INetEncryption
+	{
+		/// <summary>
+		/// Encrypt an outgoing message in place
+		/// </summary>
+		bool Encrypt(NetOutgoingMessage msg);
+
+		/// <summary>
+		/// Decrypt an incoming message in place
+		/// </summary>
+		bool Decrypt(NetIncomingMessage msg);
+	}
+}