Two of the new changes in iOS 5 were not given special attention during the WWDC 2011 Keynote today. First, Apple has officially added new multitasking gestures to the iPad that were previewed—originally for comments from developers—starting in a prior beta version of iOS 4. The gestures include four- or five-finger swipes to reveal the multitasking bar, pinch to return to the Home screen, and left- or right-swipes to switch between apps.…