New: sound null migration

Author: Poujhit

lib/src/bubble_floating_animation.dart

@@ -75,7 +75,8 @@ class BubbleFloatingAnimation {
   /// Shuffles the position of bubbles around the screen.
   void _shuffle() {
     startTime -= Duration(
-      milliseconds: (this.random.nextDouble() * duration.inMilliseconds).round(),
+      milliseconds:
+          (this.random.nextDouble() * duration.inMilliseconds).round(),
     );
   }
 

lib/src/bubbles.dart

@@ -67,7 +67,8 @@ class FloatingBubbles extends StatefulWidget {
           sizeFactor > 0 && sizeFactor < 0.5,
           'Size factor cannot be greater than 0.5 or less than 0',
         ),
-        assert(duration != null && duration >= 0, 'duration should not be null or less than 0.'),
+        assert(duration != null && duration >= 0,
+            'duration should not be null or less than 0.'),
         assert(
           opacity >= 0 && opacity <= 255,
           'opacity value should be between 0 and 255 inclusive.',
@@ -159,7 +160,9 @@ class _FloatingBubblesState extends State<FloatingBubbles> {
             },
           )
         : PlayAnimation(
-            duration: checkToStopAnimation == 0 ? Duration(seconds: widget.duration!) : Duration.zero,
+            duration: checkToStopAnimation == 0
+                ? Duration(seconds: widget.duration!)
+                : Duration.zero,
             tween: ConstantTween(1),
             builder: (context, child, value) {
               _simulateBubbles();