diff-lcs 1.2.1

Diff::LCS computes the difference between two Enumerable sequences using the McIlroy-Hunt longest common subsequence (LCS) algorithm. It includes utilities to create a simple HTML diff output format and a standard diff-like tool. This is release 1.2.1, restoring the public API to what existed in Diff::LCS 1.1.x. Everyone is strongly encouraged to upgrade to this version as it fixes all known outstanding issues.