create env processing
remove parse.py; duplicate of split.py
add s3 integration
move data to tests/data
refactor download/populate_db
fix small things
Merge branch 'master' into deploy

* master:
  Comments and minor changes
  Added date limiting functionality in table matching
  Fix test scripts to work with new convenience functions
integrate heroku postgres
New models with table_delim_str concept + minor dl fixes -> gz extension addition