Remove minimum gesture duration for fling momentum, so that very brief fling gestures are honored (Resolves #40) (#41)

Author: matthew-carroll

lib/src/page_list_viewport_gestures.dart

@@ -126,7 +126,7 @@ class _PageListViewportGesturesState extends State<PageListViewportGestures> wit
   }
 
   void _onScaleUpdate(ScaleUpdateDetails details) {
-    PageListViewportLogs.pagesList
+    PageListViewportLogs.pagesListGestures
         .finer("onScaleUpdate() - new focal point ${details.focalPoint}, focal delta: ${details.focalPointDelta}");
     if (!_isPanning) {
       // The user is interacting with a stylus. We don't want to pan
@@ -413,11 +413,6 @@ class DeprecatedPanAndScaleVelocityTracker {
       }
     }
 
-    if (gestureDuration < const Duration(milliseconds: 40)) {
-      PageListViewportLogs.pagesListGestures.fine(" - this gesture was too short to count. Ignoring.");
-      return;
-    }
-
     if (_previousGesturePointerCount! > 1) {
       // The user was scaling. Now the user is panning. We don't want scale
       // gestures to contribute momentum, so we set the launch velocity to zero.