* Refactored WHOIS sensor to resolve assumed key errors
Altered it to now set an attribute key and value only if the attribute
is present in the WHOIS response. This prevents assumed keys (registrar)
from raising a KeyError on WHOIS lookups that don't contain registrar
information (onet.pl, wp.pl, for example).
* Removed non-used self._data
* WHOIS sensor now creates a new local attributes dict and overrides
* Corrected typos, refactored error cases to clear state adn attributes
* Resolved double return and refactored error logging
* Init commit of new whois sensor
* Updated requirements
* Resolved updated showing expired, added expired attr
* Added missing attribute in init, added whois to coveragerc
* Various PR comment changes
- Now more resiliant to invalid hostnames
- Removed various assumed STATE_UNKOWN setting
- Upfront check for valid hostname preventing the sensor starting with dud
- Resolved unit of measurement Day, Days, None issue
- Datetime formatting now done to iso 8601 standard
- Removed all expired usage, not really that useful
- Unused hass assignment
* More PR comment resolutions
- Resolved the dilemma with hosts / single host per sensor. Now running
single domain per sensor.
- Renamed host(s) to domain
* Moved coveragerc sensor location
* Re-phrased the expiration_date warning
* Resolved assumed updated_date existence
* Resolved missing indent
* Resolved discover_info typo
* Update whois.py
Paulus Schoutsen
Fabian Affolter
Adam Cooper