0.9.0 Migrated code to ruby 1.9.3

0.8.3 Updated outdated exception rasing

0.8.2 Removed species info from linnean classification path

0.8.1 Linnean classification path is now only for species and infraspecies with canonical forms. It ends with a canonical form of the taxon

0.8.0 Added linnean classification path to normalized data from DwCA. It consists of data associated with clades like 'kingdom', 'order' etc.