v0.3.8

• auto_set_pid_off option added to the record upload options to turn off the
  associated CDCS database setting to avoid database errors.
• Support has been added to the potential_LAMMPS record class and builders for
  the URL fields that become the PID values for the records once uploaded.
• Depreciation fix for importlib.
• Bug fix related to finding no matching records.
• Bug fix to make int symbol values be str.