Version 0.44 21/02/2011
Fixed incorrect date output
Log and skip empty labels
OBO::Writer 0.04 - replaces underscores with colons in ids and xrefs
Fixes to similarity_match.pl script (single column flat files)
Changed the distance function from Levenshtein to n-grams

Version 0.43 29/11/2010
Alignment of the OBO writer to the output accepted by OLS
A better method to normalise string values in similarity_match.pl
Preserving of the columns in flat file format

Version 0.42 20/10/2010
Some fixes for the Protege 4.1 OWL format

Version 0.41 3/8/2010
Parser returns a hashref collection for easier lookup by id
Added a simple converter to OBO format
Fixed tests and improved docs

Version 0.40 1/8/2010
First public release