Description: Implement the function unique_in_order which takes as argument a sequence and returns a list of items without any elements with the same value next to each other and preserving the original order of elements. For example: uniqueInOrder('AAAABBBCCDAABBB') == ['A', 'B', 'C', 'D', 'A', 'B'] uniqueInOrder('ABBCcAD') == ['A', 'B', 'C', 'c', 'A', 'D'] uniqueInOrder([1,2,2,3,3]) == [1,2,3]..