Fix auto-disconnect when last user leaves.

src/main/java/moe/nekojimi/chords/Chords.java

@@ -188,7 +188,7 @@ public final class Chords extends ListenerAdapter
         final AudioChannel channelLeft = event.getChannelLeft();
         if (channelLeft != null && channelLeft == currentVoiceChannel)
         {
-            if (channelLeft.getMembers().isEmpty())
+            if (channelLeft.getMembers().size() <= 1) // just us now
                 disconnect();
         }
     }
@@ -400,6 +400,16 @@ public final class Chords extends ListenerAdapter
     {
 
         private static final String PROGRESS_SYMBOLS = " ▏▎▍▌▋▊▉█";
+
+        /*
+        ⠀⡀⣀⣠⣤⣦⣶⣾⣿
+        🌑🌘🌗🌖🌕
+        🌩🌨🌧🌦🌥🌤🌞
+        ○◔◑◕●
+        □🞎🞏🞐🞑🞒🞓■
+        □▤▥▦▧▨▩■
+         ▁▂▃▄▅▆▇█
+         */
 //        private static final String PROGRESS_SYMBOLS = " ⠀⡀⣀⣠⣤⣦⣶⣾⣿";
 
         public DownloaderMessageHandler()