First official release

This release includes many changes from different unofficial releases and is also the first official release
which I feel is ready for day to day use.

• Add colored human readable ConsoleFormatter, which is used with the default stream handler.
• Support pretty-printing key=value pairs.
• Add mucho documentation.
• Allow to remove and list handlers.
• Allow to pass custom formatter.
• Add a log method which receives a logging level, message and objects.
• Support colored console output.
• Add an event method which returns a cid (context id). The cid can also be passed into the event method via the cid flag.
• Add bind and unbind methods for binding context to a logger.
• Add set_level method for setting the logger's level.
• Support changing log level via the _set_level flag in critical and error log levels.
• Support printing a simple message without any formatting (only the message field and kv pairs are printed).
• Support passing kwarg type context to all logging methods (i.e. wryter.error('Message', k=v).
• Add OOB support (with optional dependencies) for Elasticsearch, Logzio, Syslog and File handlers.
• Expose handler configuration via env vars.
• Add many tests
• Add codeclimate checks
• Try to avoid exceptions in the logger as much as possible. Instead, display errors or exceptions in the console.

See the docs for more info.