Nc-dnsapi

Features:
* (4): Allow OPENPGPKEY and SMIMEA as record types (PR jp-coding)
* (1): Enhance print output of domain list (PR coldfix)
* (3): Fix example for DNS records (PR tuxmaster5000)

Return an empty list if no dns records exist.

This release ensures the backward compatibility with Python 2.7 and fixes some small bugs. All CRUD methods will now also return the current recordset.

Added methods:
* Check if a record exists in DNS: ``dns_record_exists(domainname, record)``
* Get a record with it's Id: ``dns_record(domainname, record)``
* Delete a set of records: ``delete_dns_records(domain, records[])``

First release of nc_dnsapi