Everett

--------------------------

Backwards incompatible changes:

* Dropped support for Python 3.4. (96)

* Dropped support for Python 3.5. (116)

Fixes:

* Add support for Python 3.7. (68)

* Add support for Python 3.8. (102)

* Add support for Python 3.9. (117)

* Reformatted code with Black, added Makefile, switched to GitHub Actions.

* Fix ``get_runtime_config()`` to infer namespaces. (118)

* Fix ``RemovedInSphinx50Warning``. (115)

* Documentation fixes and clarifications.

---------------------------

Fixes:

* Improve documentation.

* Fix problems when there are nested ``BoundConfigs``. Now they work
correctly. (90)

* Add "meta" to options letting you declare additional data on the option
when you're adding it.

For example, this lets you do things like mark options as "secrets"
so that you know which ones to ``******`` out when logging your
configuration. (88)

-------------------------

Fixes:

* Fix documentation issues.

* Package missing ``everett.ext``. Thank you, dsblank! (84)

-------------------------

Backwards incompatible changes:

* Dropped support for Python 2.7. Everett no longer supports Python 2. (73)

* Dropped support for Python 3.3 and added support for Python 3.7. Thank you,
pjz! (68)

* Moved ``ConfigIniEnv`` to a different module. Now you need to import it
like this::

from everett.ext.inifile import ConfigIniEnv

(79)

Features:

* Everett now logs configuration discovery in the ``everett`` logger at the
``logging.DEBUG`` level. This is helpful for trouble-shooting some kinds of
issues. (74)

* Everett now has a YAML configuration environment. In order to use it, you
need to install its requirements::

$ pip install everett[yaml]

Then you can import it like this::

from everett.ext.yamlfile import ConfigYamlEnv

(72)

Fixes:

* Everett no longer requires ``configobj``--it's now optional. If you use
``ConfigIniEnv``, you can install it with::

$ pip install everett[ini]

(79)

* Fixed list parsing and file discovery in ConfigIniEnv so they match the
docs and are more consistent with other envs. Thank you, apollo13! (71)

* Added a ``.basic_config()`` for fast opinionated setup that uses the
process environment and a ``.env`` file in the current working directory.

* Switching to semver.

---------------------

Changed:

* Rewrite Sphinx extension. The extension is now in the ``everett.sphinxext``
module and the directive is now ``.. autocomponent::``. It generates better
documentation and it now indexes Everett components and options.

This is backwards-incompatible. You will need to update your Sphinx
configuration and documentation.

* Changed the ``HISTORY.rst`` structure.

* Changed the repr for ``everett.NO_VALUE`` to ``"NO_VALUE"``.

* ``InvalidValueError`` and ``ConfigurationMissingError`` now have
``namespace``, ``key``, and ``parser`` attributes allowing you to build your
own messages.

Fixed:

* Fix an example in the docs where the final key was backwards. Thank you, pjz!

Documentation fixes and updates.

------------------------

Added:

* Add ``:namespace:`` and ``:case:`` arguments to autoconfig directive. These
make it easier to cater your documentation to your project's needs.

* Add support for Python 3.6.

Minor documentation fixes and updates.