Add "skip visuals" to tick. So we can run lots of ticks without updating visuals. Needed to process tests automatically.

EduNetworkBuilder/Network.cs

@@ -1241,8 +1241,9 @@ namespace EduNetworkBuilder
             NetworkStartTime = DateTime.Now;
         }
 
-        public void Tick()
+        public void Tick(bool SkipVisuals = false)
         {
+            if(!SkipVisuals)
                 EraseOldPackets();
             //if (myPackets.Count > 50)
                 //Console.WriteLine("Packets: " + myPackets.Count.ToString());
@@ -1259,6 +1260,7 @@ namespace EduNetworkBuilder
                 {
                     //It has all been taken care of
                 }
+                if(!SkipVisuals)
                     DrawPackets();
                 //myPBox.Refresh();
                 previously_had_packets = true;