V1.1.0 updates

Some long needed updates. Improves usability and leverages more of the datapoints available through the airbrake error reporting API. Includes a helper for fetching a logger object, pre-configured with an AirbrakeHandler, and many other improvements.

Updated [the README](https://github.com/samstav/airbrake-python/blob/v1.1.0/README.md) to reflect the simplified interface.
You are still able to do things just like that, `logger.exception(exc)`

One reason for the change was so that you could declare/ship errors that do not necessarily raise an exception. This allows you log error messages, have them shipped to airbrake, and you still get the line/function/file and all the other context that comes with using airbrake-python