Throws exception on waiting for an invalid tag

example/client/dub.selections.json

@@ -2,6 +2,6 @@
 	"fileVersion": 1,
 	"versions": {
 		"bformat": "1.0.8",
-		"tristanable": "0.0.19"
+		"tristanable": "0.0.21"
 	}
 }

example/server/dub.selections.json

@@ -2,6 +2,6 @@
 	"fileVersion": 1,
 	"versions": {
 		"bformat": "1.0.8",
-		"tristanable": "0.0.19"
+		"tristanable": "0.0.21"
 	}
 }

source/tristanable/manager.d

@@ -141,10 +141,11 @@ public final class Manager
             /* Throw an exception if it doesn't exist */
             if(!isValidTag(tag))
             {
-                /* TODO: Throw exception here */
-
                 /* Unlock the queue */
                 unlockQueue();
+
+                /* Throw exception here */
+                throw new TristanFokop("Invalid tag");
             }
 
             /* Get the request */
@@ -187,4 +188,12 @@ public final class Manager
     {
         queueMutex.unlock();
     }
+}
+
+public final class TristanFokop : Exception
+{
+    this(string message)
+    {
+        super(message);
+    }
 }