* NTs: internal and external cheek pouches
 * NTs: for various papillae of tongue (horny, mechanical)
 * added additional axioms for spatial relations
     * added additional axioms for spatial relations
     * NTs: internal and external cheek pouches
     * NTs: for various papillae of tongue (horny, mechanical)
     * NT: epithelium of intestinal villus; tidied epithelium of logical defs
     * NTs: intertrochanteric line and crest
     * renaming cartilaginous element to cartilage element according to VSAO. Partially addresses issue 59
     * renaming acropodial and limb/fin skeleton according to VSAO. Partially addresses issue 59
     * renaming pec/pelv girdle skeleton to use WP rather than P of W pattern. Relabeled skeletons for auto, meta and meso to use relational adjectival form. Partially addresses #59