This library implements the "patience diff" algorithm, as well as the patience
algorithm for the longest increasing subsequence problem.
Patience diff computes the difference between two lists, for example the
lines of two versions of a source file. It provides a good balance of
performance, nice output for humans, and implementation simplicity. For more
information, see http://alfedenzo.livejournal.com/170301.html and
http://bramcohen.livejournal.com/73318.html.