Added Source attribute to Fields

Added Source attribute to Fields

Fix new setup.py config, fix requirements

Fix new setup.py config, fix requirements

Fix new setup.py config, fix requirements

Fix new setup.py config, fix requirements

Fix new setup.py config

Fix new setup.py config

Added views fir tree frameworks

• Added base views
• Added base views mixins
• Added views pagination
• Added ApiException
• Added views for Flask
• Added views for AioHttp
• Added views for Sanic
• Added utils.decorators for class check attributes and signature
• Fix not actual docs

Added ChoiceValidator

Added ChoiceValidator in serializers.validators

Add BooleanNullFIeld

• Mini fix Serializers _field_validation method.
• Add BooleanNullField.
• Remove Null values from BooleanField.

Mini fix SerializerMethodField call to_representation method

Mini fix SerializerMethodField call to_representation method

v0.1.7

add __deepcopy__ on all serializers (#1)