* DT:
  * NTs: upper/lower/middle esophagus
  * dermal layer of tongue
 * cetacean head:
  * NT: blowhole
  * added images
i    * syns for medial globus pallidus
     * provenance for tapetal structures
    * NTs: multiple NTs for skull points, fossae and zones, including Neanderthal and Homo erectus specific
     * Removed many automatically generated syns
     * Changed some OBOL:automatic to OBOL:accepted
     * Coroid & retina:
      * relabeled choroid to optic horoid
      * NT: stratum argenteum of choroid
      * NT: choroid gland
     * use new Bgee stages for xrefs
     * DT:
      * NTs: upper/lower/middle esophagus
       * dermal layer of tongue
     * cetacean head:
      * NT: blowhole
      * added images
orig
Fixes #157