v0.3.0

• Major overhaul of the package. Most of the code was reworked to add
  functionality and streamline database interactions between the potentials, atomman
  and iprPy packages.
• Basic database and record handling now in a separate sub-package, which is planned
  on being fully branched off later.
• A csv-based caching system is added for local style databases to speed up queries.
• Records now specify recognized query parameters allowing for custom "fast" queries
  to be generated for the different database styles.
• Loading of record styles no longer necessary.
• Performance improvements related to how the query actions are performed.
• The handling of openKIM models has been improved.
• Tools relating to building and analyzing EAM parameter files have been added in.
• Specific database operations now exist for all supported record styles.