Implement Receiver debug events

src/client/voice/VoiceConnection.js

@@ -415,11 +415,6 @@ class VoiceConnection extends EventEmitter {
     const guild = this.channel.guild;
     const user = this.client.users.get(user_id);
     this.ssrcMap.set(+ssrc, user);
-    if (!speaking) {
-      for (const receiver of this.receivers) {
-        receiver.stoppedSpeaking(user);
-      }
-    }
     /**
      * Emitted whenever a user starts/stops speaking.
      * @event VoiceConnection#speaking

src/client/voice/receiver/PacketHandler.js

@@ -50,7 +50,10 @@ class PacketHandler {
     const stream = this.streams.get(user.id);
     if (!stream) return;
     const opusPacket = this.parseBuffer(buffer);
-    if (opusPacket instanceof Error) return;
+    if (opusPacket instanceof Error) {
+      this.emit('error', opusPacket);
+      return;
+    }
     stream.push(opusPacket);
   }
 }

src/client/voice/receiver/Receiver.js

@@ -7,6 +7,12 @@ class VoiceReceiver extends EventEmitter {
     super();
     this.connection = connection;
     this.packets = new PacketHandler(this);
+    /**
+     * Emitted whenever there is a warning
+     * @event VoiceReceiver#debug
+     * @param {Error|string} error The error or message to debug
+     */
+    this.packets.on('error', err => this.emit('debug', err));
     this.connection.sockets.udp.socket.on('message', buffer => this.packets.push(buffer));
   }
 
@@ -21,10 +27,6 @@ class VoiceReceiver extends EventEmitter {
     }
     return stream;
   }
-
-  stoppedSpeaking() {
-    return false;
-  }
 }
 
 module.exports = VoiceReceiver;

src/client/voice/receiver/VoiceReceiver.js

@@ -131,7 +131,7 @@ class VoiceReceiver extends EventEmitter {
     return stream;
   }
 
-  /** 
+  /**
    * Creates a readable stream for a user that provides PCM data while the user is speaking. When the user
    * stops speaking, the stream is destroyed. The stream is 32-bit signed stereo PCM at 48KHz.
    * @param {UserResolvable} user The user to create the stream for