Removing unused tmp_file, as Biopython now supports Nexus.
 command CSV output shouldn't return duplicates.
Use Virtuoso's option(transitive) to count the number of steps to the common ancestor, instead of tracing the ancestor back to the root of the tree.
pyodbc returns tuples, not dictionaries.
Removing deprecated optional ?mrca_ancestor section of query; this has been replaced by ?steps.
Updating README instructions regarding BioPython, DendroPy, and librdf; author's fork of BioPython, and dendropy, are no longer required.
Updating pruner to work correctly and more efficiently. Pruner will no longer raise exceptions if a taxon can't be found or if two taxa being compared are on the same lineage.
Using a simpler, more efficient MRCA algorithm, and updating pruner to not remove splitting nodes even if they're not named in the query.
Fixing merge conflict with README.