Bug in Emitter.Subscribe.cs

[postacik]

public ushort Unsubscribe(string key, string channel)
        {
            // Unregister the handler
            this.Trie.UnregisterHandler(key);

            // Unsubscribe
            return this.Client.Unsubscribe(new string[] { FormatChannel(key, channel) });
        }

...should be updated as:

public ushort Unsubscribe(string key, string channel)
        {
            // Unregister the handler
            this.Trie.UnregisterHandler(channel);

            // Unsubscribe
            return this.Client.Unsubscribe(new string[] { FormatChannel(key, channel) });
        }