4.0.0

• support for using a non-sqlite database
• hascity method now returns cities where the city OR a secondary city matches
  by default with an option to specify primary only
• IMPORTATNT. for legal adherence, the zipcodes are no longer packaged with this package
  and must be downloaded from
  https://www.unitedstateszipcodes.org/zip-code-database/ via the readme.

3.0.1

• upgraded database to use data from unitedstateszipcodes.org
  • this means that to use this package commercially you must purchase a license
    here -> https://www.unitedstateszipcodes.org/zip-code-database/
• removes yaxis and xaxis
• removes country
• removes tax returns filed
• removes wages
• changes meaning of location to the previous location text
• removes location text
• adds area codes
• adds acceptable cities
• adds county
• adds hascity function
• adds hasareacode function
• add instructions to refresh database intermittently
• removes to_dict -> use dict(obj) instead.
• changed lon to more standard lng