Wq.db

New Modules
- **[vera](http://wq.io/vera)** (in `contrib`): An implementation of the [ERAV](http://wq.io/research/provenance) data model, which supports retaining provenance for observational data imported from spreadsheets

API improvements
- Full read-write support for all four [design patterns](http://wq.io/docs/about-patterns): [annotate](http://wq.io/docs/annotate), [identify](http://wq.io/docs/identify), [locate](http://wq.io/docs/locate), and [relate](http://wq.io/docs/relate).
- Integrated CRS-aware GeoJSON serialization. Almost any page can now be rendered as GeoJSON simply by appending `.geojson` to the URL. Pages with geometry will automatically have `'map': true` set in the [wq configuration object](http://wq.io/docs/config) to enable use in [wq.app](http://wq.io/wq.app)'s [map.js](http://wq.io/docs/map.js).
- Leveraging [Johnny Cache](http://pythonhosted.org/johnny-cache/) to cache both querysets and page rendering information for faster response times
- The set of valid `choices` for enum-style Django fields will be passed to the client via the [wq configuration object](http://wq.io/docs/config)

Other
- Various bug fixes & syntax improvements (e.g. PEP8)

API Improvements
- Updated to [Django REST Framework](http://django-rest-framework.org) 2.X series
- Better modular directory structure ([rest](http://wq.io/docs/rest), [patterns](http://wq.io/docs/about-patterns), and [contrib.files](http://wq.io/docs/files))
- Full read-write nested serializer for `annotate.Annotation`
- Allow [annotate](http://wq.io/docs/annotate)'s `Annotation` to be swapped with custom models
- Various other improvements

Initial release. Based on Django REST Framework 0.4.0.