mozlogging: MozLog with the logging Module

Example:

>>> import logging
>>> from mozlogging import MozLogFormatter
>>> logger = logging.getLogger('example')
>>> handler = logging.StreamHandler()
>>> handler.setFormatter(MozLogFormatter())
>>> logger.addHandler(handler)
>>> logger.error({'dict': 1, 'of': 2, 'fields': 3}, 'my.message.type')
{"EnvVersion": "2.0", "Fields": {"dict": 1, "fields": 3, "of": 2}, "Logger": "example", "Severity": 3, "Timestamp": 1489366186847323648, "Type": "my.message.type"}