2.0.0a2

• Added a first-class InOrder API via mockito.InOrder (also available as
  mockito.inorder.InOrder). The legacy in-order mode only supported one mock at a time;
  the new API supports true cross-mock order verification.

  Migration (old limited style -> new style)::

  # Before (legacy, single-mock order only)
  from mockito import inorder
  inorder.verify(cat).meow()
  inorder.verify(cat).purr()
  
  # Now (preferred, explicit cross-mock order)
  from mockito import InOrder
  in_order = InOrder(cat, dog)
  in_order.verify(cat).meow()
  in_order.verify(dog).bark()
  

• The legacy in-order verification mode (inorder.verify(...))
  is deprecated in favor of InOrder(...).