Djangorestframework-chain

This release primarily adds compatibility with `django-filter` 1.0 (more details
in 144), and is an intermediate step to overhauling the behavior of filters
that span relationships.

As `RelatedFilter` is a subclass of `ModelChoiceFilter`, you may take advantage
of the `callable` behavior for the `queryset` argument. The `queryset` is now a
required argument, which is a forwards-incompatible change. You can provide the
model's default queryset to maintain the current behavior, or a callable, which
will allow you to filter the queryset by the request's properties.

* 124 Removed deprecation warnings
* 128 Fix all lookups handling for related fields
* 129 Fix template rendering
* 139 Fix metaclass inheritance bug
* 146 Make `RelatedFilter.queryset` a required argument
* 154 Add python 3.6 support
* 161 Fix request-based filtering
* 170 Improve RelatedFilter queryset error message

- 128 Fix all lookups handling for related fields
- 129 Fix backend template rendering
- 148 Version lock django-filter<1.0 due to API incompatibilities

This release is tied to the 0.15.0 update of django-filter, and is in preparation of
a (near) simultaneous 1.0 release. All current deprecations will be removed in the
next release.
- Updates django-filter requirement to 0.15.0
- 101 Add support for Django 1.10, set DRF support to 3.3, 3.4, and drop support for python 3.2
- 114 Add `lookups` argument to `RelatedFilter`
- 113 Deprecated `MethodFilter` for new `Filter.method` argument
- 123 Fix declared filters being overwritten by AllLookupsFilter

- Fix bug where AllLookupsFilter would override a declared filter of the same name
- 84 Fix AllLookupsFilter compatibility with ForeignObject related fields
- 82 Fix AllLookupsFilter compatibility with mixin FilterSets
- 81 Fix bug where FilterSet modified ViewSet.filter_fields
- 79 Prevent infinite recursion for chainable transforms, fixing compatiblity w/ django.contrib.postgres

This release is tied to a major update of django-filter (more details in 66), which fixes how lookup expressions are resolved. 'in', 'range', and 'isnull' lookups no longer require special handling by django-rest-framework-filters. This has the following effects:
- Deprecates ArrayDecimalField/InSetNumberFilter
- Deprecates ArrayCharField/InSetCharFilter
- Deprecates FilterSet.fix_filter_field
- Deprecates ALL_LOOKUPS in favor of '**all**' constant.
- AllLookupsFilter now generates only valid lookup expressions.
- 2 'range' lookup types do not work
- 15 Date lookup types do not work (year, day, ...)
- 16 'in' lookup types do not work
- 64 Fix browsable API filter form
- 69 Fix compatibility with base django-filter `FilterSet`s
- 70 Refactor related filter handling, fixing some edge cases
- Deprecated 'cache' argument to FilterSet
- 73 Warn use of `order_by`

- 61 Change django-filter requirement to 0.12.0
- Adds support for Django 1.9
- 47 Changes implementation of MethodFilterss
- Drops support for Django 1.7
- 49 Fix ALL_LOOKUPS shortcut to obey filter overrides (in, isnull)
- 46 Fix boolean filter behavior (25) and isnull override (6)
- 60 Fix filtering on nonexistent related field