message: Stopped and started nested scroll on onTouch
  When it was in onIntercept then it got reset before it reached the move in onTouch - this only happened when scrolling on the blank area of the scroll view below the actual content. Seens safe enough to ensure nested scrolling is started when dragging?!
diff: @@ -60,7 +60,6 @@ public class CoordinatorLayoutView extends CoordinatorLayout {
  dragging = false;
  lastMotionY = (int) ev.getY();
  activePointerId = ev.getPointerId(0);
  - scrollView.startNestedScroll(SCROLL_AXIS_VERTICAL);
  break;
  }
  case MotionEvent.ACTION_MOVE:
  @@ -75,7 +74,6 @@ public class CoordinatorLayoutView extends CoordinatorLayout {
  case MotionEvent.ACTION_CANCEL:
  case MotionEvent.ACTION_UP:
  dragging = false;
  - scrollView.stopNestedScroll();
  break;
  }
  }
  @@ -91,6 +89,7 @@ public class CoordinatorLayoutView extends CoordinatorLayout {
  int action = ev.getAction();
  switch (action & MotionEvent.ACTION_MASK) {
  case MotionEvent.ACTION_MOVE: {
  + scrollView.startNestedScroll(SCROLL_AXIS_VERTICAL);
  int activePointerIndex = ev.findPointerIndex(activePointerId);
  int y = (int) ev.getY(activePointerIndex);
  int deltaY = lastMotionY - y;
  @@ -104,6 +103,7 @@ public class CoordinatorLayoutView extends CoordinatorLayout {
  case MotionEvent.ACTION_CANCEL:
  case MotionEvent.ACTION_UP:
  dragging = false;
  + scrollView.stopNestedScroll();
  break;
  }
  }
  