- Moving Notify things into "enum" class

- Adding \Countable interfaces to both UglyQueue and UglyQueueManager

src/UglyQueueEnum.php

@@ -0,0 +1,24 @@
+<?php namespace DCarbone;
+
+/**
+ * Class UglyQueueEnum
+ * @package DCarbone
+ *
+ * Pseudo-enum thing.
+ */
+abstract class UglyQueueEnum
+{
+    // Typically used by UglyQueueManager
+    const MANAGER_INITIALIZED = 1;
+    const QUEUE_ADDED = 2;
+    const QUEUE_REMOVED = 3;
+
+    // Typically used by UglyQueues
+    const QUEUE_INITIALIZED              = 100;
+    const QUEUE_LOCKED                   = 101;
+    const QUEUE_FAILED_TO_LOCK           = 102;
+    const QUEUE_LOCKED_BY_OTHER_PROCESS  = 103;
+    const QUEUE_UNLOCKED                 = 104;
+    const QUEUE_PROCESSING               = 105;
+    const QUEUE_REACHED_END              = 106;
+}