* various NTs to support logical definitions
 * definition overhaul
 * multiple changes. Improved definitions from WP, made more concise. Myotome overhaul
 * translated comments to specific APs
 * Added roman numeral digit labels as preferred terms for comparative anatomists. Fixes #458
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reclassified some classes as being cartilage elements rather than tissue
tidying
renaming jaw joint. Issue #463