TCRM 3.0rc1

This release upgrades the code base to Python 3.6. We're putting it out for testing and checking prior to a formal release.

Changes:

• Basemap (deprecated) has been replaced with cartopy
• Automatic system test for scenario simulation
• Remove unreferenced test data
• Link in the HazImp application to enable impact analysis (see https://github.com/GeoscienceAustralia/HazImp)
• Fix download function to use public methods
• Fix for reading CSV files in py3
• Update the check for compiled modules