Adds full support for YouTube playback.

While a few optimizations could be made, YouTube playback is almost as seamless as local playback.

addonInter/src/main/java/edu/regis/universeplayer/addon/BrowserLink.java

@@ -219,7 +219,15 @@ public class BrowserLink extends MessageRunner
         
         if (clazz != null)
         {
-            return gson.fromJson(message, clazz);
+            try
+            {
+                return gson.fromJson(message, clazz);
+            }
+            catch (Exception e)
+            {
+                logger.error("Could not parse " + message, e);
+                throw e;
+            }
         }
         else
         {

addonInter/src/main/java/edu/regis/universeplayer/addon/Main.java

@@ -52,6 +52,10 @@ public class Main
                  * Pretty much just forwards any messages to the browser and
                  * returns their value.
                  */
+                browserLink.addUpdateListener((update, link) -> {
+                    logger.debug("Sending update {}", update);
+                    interfaceLink.sendUpdate(update);
+                });
                 interfaceLink.addListener((providedValue, previousReturn) -> {
                     logger.debug("Forwarding message to browser: {}", providedValue);
                     Object returnValue = browserLink.sendObject(providedValue).get();