#268 Added version number and raised Zone radius.
Closes #268.  Integrated Version model into parser, model, migration, and display under the Population Map.
Minor: re-fixing largest_zone_radius that somehow got reverted in 9f41d93b968da42631f155f3def11d1aac933134
#264 Delayed deletion of Supplements.  Automatic save after completing Simulation.
#264 Change the appearance of the Run Simulation button to warn of an existing supplemental folder.
#287 Python 3 compatibility fixes
#181 check for Map directory contents before creating zip.
#211 and #287 Py3 fix for scatterplot line width
#211 Changed marker size based on herd size.
Merge branch 'master' into Windows-staging

Conflicts:
	Results/interactive_graphing.py
#287 Fixed dictconfig and _pyio.  Using os.path.join()