Support base mixer
Some fixes.
Some tests are passing.
Passed base tests.
Update test requirements
Update generation of relations.
Fix main.
Flask tests are passed.
Added django tests.
Added django backend.
First Django test are passed.
Update fakers.
Passed base django tests.
Fake by default in base mixers.
Fake by default
Added ip4 generator.
Fake by default.
Respect parent mixer.
Passed Django tests.
Add sequence, add cycle.