Fix RemovedInDjango41Warning

[nurettin]

Fixes

RemovedInDjango41Warning: 'django_q' defines default_app_config = 'django_q.apps.DjangoQConfig'. Django now detects this configuration automatically. You can remove default_app_config.

[codecov]

Codecov Report

Merging #572 (7045f55) into master (c47786b) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #572   +/-   ##
=======================================
  Coverage   90.22%   90.23%           
=======================================
  Files          50       50           
  Lines        3295     3297    +2     
=======================================
+ Hits         2973     2975    +2     
  Misses        322      322           

Impacted Files	Coverage Δ
django_q/__init__.py	100.00% <100.00%> (ø)

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[nurettin]

Hope this will make it to 1.3.8 and silence our pytests.

[Koed00]

1.3.8 got released yesterday - but I don't think it will be too long before 1.3.9.

Thanks for addressing the issue and coming up with a fix. It's appreciated!