Features needed for Home Assistant integration

[joncar]

I added several features I needed to use this in a Home Assistant integration:

• Added support for parsing some new enums and fields.
• Made it resilient to the addition of new event types since I kept finding more throughout the time I had a Snoo and new ones would throw an exception, breaking the long running connection.
• Made the PubNub subscription resilient to authentication credentials expiring so it could remain connected for more than a few hours. NOTE: This is a breaking change to the constructor parameters.
• Added a connection state callback.
• Added a verbose option to the CLI tool to view the raw JSON responses to the API calls.

[rado0x54]

Phew, shame on me for not getting to this earlier. I will try to reactive this project soon and merge you contributions back to this project. Thanks for contributing.