UPDATES

•    New setter methods for AutoUiStack (align_elements_<left, right, center, top, bottom, top_left, top_right, bottom_left, and bottom_right>)
• New helpers methods for AutoUiStack (auto_stack_<placement>)
• New Stack example object included

BUG FIXES    

• Had a wrong method in AutoUiRow (len() instead of array_length())
• get_offset_y() now returns the correct offset value
• The method for determining if the scroller's scrollbar visibility had the wrong bool check calculation
  
• TextEdit paste function no longer adds wrong edit index