Add shortcut for song restart. Fixes #13

src/js/HuesCore.js

@@ -972,6 +972,9 @@ HuesCore.prototype.keyHandler = function(key) {
     case 61: // EQUAL, legacy
         this.soundManager.increaseVolume();
         break;
+    case 66: // B
+        this.soundManager.seek(-this.soundManager.buildLength);
+        break;
     case 77: // M
         this.soundManager.toggleMute();
         break;

src/js/HuesInfo.js

@@ -50,6 +50,7 @@ let shortcuts = [
     "[N] Random song",
     "-+  Change volume",
     "[M] Toggle mute",
+    "[B] Restart song from build",
     "[F] Toggle automode",
     "[H] Toggle UI hide",
     "[C] Character list",