Release with support for Django 2.1

[ferndot]

This package breaks on Django 2.1 due to a Django API change. I reproduced this issue using both the PyPi version and the master branch.

Here is the error I receive:

Traceback (most recent call last):
web_1       |   File "./manage.py", line 10, in <module>
web_1       |     from configurations.management import execute_from_command_line
web_1       |   File "/usr/local/lib/python3.7/site-packages/configurations/management.py", line 3, in <module>
web_1       |     importer.install(check_options=True)
web_1       |   File "/usr/local/lib/python3.7/site-packages/configurations/importer.py", line 49, in install
web_1       |     importer = ConfigurationImporter(check_options=check_options)
web_1       |   File "/usr/local/lib/python3.7/site-packages/configurations/importer.py", line 67, in __init__
web_1       |     self.check_options()
web_1       |   File "/usr/local/lib/python3.7/site-packages/configurations/importer.py", line 87, in check_options
web_1       |     add_help=False)
web_1       | TypeError: __init__() takes 1 positional argument but 2 were given

[blueyed]

Looks like it should be fixed in d3b9931.

[bryson]

When will a new PyPI release be created that includes this?

[blueyed]

See also #195 (for 2.0, which worked for me so far).

I've merged #201 already.

Somebody writing the changelog would help certainly.

[blueyed]

Also confirmation that master actually works for you with dj21 would be helpful, too.

[moorchegue]

I've tried 2.1 with current master and can confirm that the problem is gone.

Please release :)

[drewbrew]

@blueyed cherry-picked my commit from #206 and tagged the new release. As soon as 2.1 goes live on PyPI, this should be good to be closed.

[blueyed]

Released it now.
Thanks for the changelog, @drewbrew!

[drewbrew]

Glad to help. I'll be using this code in my example project in my DRF talk during DjangoCon US 2018, so I figured I might as well make sure all my dependencies are as up to date as possible. :D