1.2.0

• Uploaded networks are now public, searchable, showcased, and fully
  indexed by default

• The search for networks to update is done by matching the labels
  network attribute first and if no match is found, the name is used

• Fixed bug where some networks were laid out on a single horizontal
  line. This happened when the location attribute for all nodes
  in a network were all the same

• Fixed bug where duplicate symbols ended up in member attribute of nodes UD-2078

• Uses labels network attribute (if found) to find network on NDEx to update instead
  of upload as new. If no labels match, then any network matching the name of
  network is updated otherwise network is uploaded as a new network. UD-1677

Style fix

• Removed NODE_LABEL_POSITION discrete mapping from style since it is
  not compatible with CX 2.0

style and doi fix

• Fixed bug where an empty pathway description file would cause loader to fail. Issue #1

• Removed network visual properties: NETWORK_CENTER_\*, NETWORK_ HEIGHT, NODE_SELECTION, SCALE_FACTOR, SIZE, WIDTH
  cause they caused problems when displaying the network in Cytoscape

• Fixed bug where URL for DOI in reference network attribute was incorrect

• Set minimum version of ndex2 python client to 3.3.1 and maximum to less then 4.0.0

• Set maximum version of ndexutil package to less then 2.0.0