0.3 (October 6th, 2016)
-----------------------

Feature: Add ``ConfigManager.from_dict()`` shorthand for building configuration
instances.

Feature: Add ``.get_namespace()`` to ``ConfigManager`` and friends for getting
the complete namespace for a given config instance as a list of strings.

Feature: Make ``ConfigDictEnv`` case-insensitive to keys and namespaces.

Feature: Add ``alternate_keys`` to config call. This lets you specify a list
of keys in order to try if the primary key doesn't find a value. This is
helpful for deprecating keys that you used to use in a backwards-compatible
way.

Feature: Add ``root:`` prefix to keys allowing you to look outside of the
current namespace and at the configuration root for configuration values.