SortedArrayList 1.1

Includes SortedArrayList which is an ArrayList
that remembers how it is sorted, so that if you
ask it to sort, it can sometimes bypass the work
when it is already in order.  It also includes a
Merge class for merging and deduping
SortedArrayLists in a variety of ways.  Includes
Java source.  May be freely distributed and used
for any purpose except military.
Version 1.1 adds an invalidate method an assertion
checking that you have not inadvertently disturbed
the sort order by changing element fields.