Edit distance calculator with Damerau Levenshtein algorithm

 Text::Levenshtein::Damerau module returns the true Damerau Levenshtein
 edit distance of strings with adjacent transpositions. Useful for
 fuzzy matching, DNA variation metrics, and fraud detection.
 .
 Defaults to using Pure Perl Text::Levenshtein::Damerau::PP. This
 module can use Text::Levenshtein::Damerau::XS for massive speed
 improvements. Works correctly with utf8 if backend supports it.