Django-rest-witchcraft

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- ExpandableModelSerializer (17) [Miroslav Shubernetskiy]























- Fixing saving serializer with source=* (16) [Miroslav Shubernetskiy]

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- Correctly removing composite when validated data is None (15)
[Miroslav Shubernetskiy]

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- Fixing enum field choices (14) [Miroslav Shubernetskiy]

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- Fixing updating model when field.field_name != field.source (13)
[Miroslav Shubernetskiy]





- Add nested update test (12) [Serkan Hosca]

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- Merge pull request 10 from shosca/composite-labels. [Serkan Hosca]
- Fixing uri field for multiple pk models. fixed tests. [Miroslav
Shubernetskiy]
- Honoring lookup_field iin querying model in generics.py when single
pk. [Miroslav Shubernetskiy]
- Normalizing django validation errors in apis. [Miroslav Shubernetskiy]
- Fixing composite serializer field labels to use compose fields vs
column names. [Miroslav Shubernetskiy]

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- Merge pull request 11 from shosca/relation-null-set. [Serkan Hosca]
- Fix many-to-one or one-to-one relation null set. [Serkan Hosca]