Added Django 1.10 support

[pawelad]

As discussed in #53, NoArgsCommand is deprecated in Django 1.10 which makes django-kronos unusable. Fortunately the fix is easy (via docs):

class NoArgsCommand
    Deprecated since version 1.8:
    Use BaseCommand instead, which takes no arguments by default.

I also added Django 1.10 and Python 3.5 to testing config (both tox.ini and travis.yml).

[coveralls]

Coverage remained the same at 87.597% when pulling 7142961 on pawelad:master into 9687aed on jgorset:master.

[coveralls]

Coverage remained the same at 87.597% when pulling 7142961 on pawelad:master into 9687aed on jgorset:master.

[pawelad]

Hm - the problem with NoArgsCommand seems to be fixed, but Django 1.10 builds fail with django.core.management.base.CommandError: Error: unrecognized arguments: complain.

I'm looking into it.

[coveralls]

Coverage increased (+0.1%) to 87.739% when pulling 9d1b4ed on pawelad:master into 9687aed on jgorset:master.

[coveralls]

Coverage increased (+0.1%) to 87.692% when pulling cee2d94 on pawelad:master into 9687aed on jgorset:master.

[pawelad]

Third time's the charm ; -)

Though the only way I managed to get it working on 1.10 was to drop support for 1.7. It's not supported anymore so that shouldn't be a big problem (or at least I hope it isn't), but probably warrants a new release.

[coveralls]

Coverage increased (+0.1%) to 87.692% when pulling 2425614 on pawelad:master into 9687aed on jgorset:master.

[coveralls]

Coverage increased (+0.1%) to 87.692% when pulling 2425614 on pawelad:master into 9687aed on jgorset:master.

[coveralls]

Coverage increased (+0.1%) to 87.692% when pulling 2425614 on pawelad:master into 9687aed on jgorset:master.

[jgorset]

Thanks @pawelad! I think dropping support for 1.7 is fine, too. Have 🍰!