Fixed 7tv & Twitch reconnection. Added adbreak, follow, subscription handlers for Twitch. Added multi-chat support. Added support to unsubscribe from Twitch event subs.

Chat/Commands/ICommandManager.cs

@@ -0,0 +1,9 @@
+using TwitchChatTTS.Twitch.Socket.Messages;
+
+namespace TwitchChatTTS.Chat.Commands
+{
+    public interface ICommandManager {
+        Task<ChatCommandResult> Execute(string arg, ChannelChatMessage message, IEnumerable<string> groups);
+        void Update(ICommandFactory factory);
+    }
+}