message: Switched to YES and NO for consistency?
diff: - (void)tabPressed
  {
  - _tabChanged = true;
  + _tabChanged = YES;
  [self selectTab];
  }
  NVTabBarItemView *tabBarItem = (NVTabBarItemView *) [tabBar.reactSubviews objectAtIndex:i];
  tabBarItem.alpha = (i == self.selectedSegmentIndex ? 1 : 0);
  if (_tabChanged && i == self.selectedSegmentIndex && !!tabBarItem.onPress) {
  - _tabChanged = false;
  + _tabChanged = NO;
  tabBarItem.onPress(nil);
  }
  }
  