dates() and datetimes() support

[szykin]

Added dates() and datetimes() support.

[codecov-io]

Codecov Report

Merging #46 into master will not change coverage.
The diff coverage is 100%.

@@          Coverage Diff          @@
##           master    #46   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files           6      6           
  Lines         674    694   +20     
=====================================
+ Hits          674    694   +20

Impacted Files	Coverage Δ
django_mock_queries/utils.py	100% <100%> (ø)	⬆️
django_mock_queries/query.py	100% <100%> (ø)	⬆️

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[stphivos]

Thanks!