Fixed a raise condition when using the simple backend (e.g. in tests) and changing the DEBUG setting dynamically (e.g. in integration tests).
Fixed update_index process leak.
Add missing `ImproperlyConfigured` import from django's exceptions.

l178 failed.
Added Jannis to Primary Authors.
Removed jezdez's old entry in AUTHORS.
Fix for #378: Highlighter returns unexpected results if one term is found within another.
Added witten to AUTHORS.
Merge branch 'master' of github.com:jezdez/django-haystack
Refactored ``SearchBackend.search`` so that kwarg-generation operations are in a discrete method.

This makes it much simpler to subclass ``SearchBackend`` (& the engine-specific variants) to add support for new parameters.
Fixed Django 1.4 compatibility. Thanks to bloodchild for the report!
Refactor Solr & ES SearchQuery subclasses to use the ``build_params`` from ``BaseSearchQuery`` to build the kwargs to be passed to the search engine.

This refactor is made to make extending Haystack simpler. I only ran the Solr tests which invoked a ``run`` call (via ``get_results``), and those passed. I did not run the ElasticSearch tests; however, the ``run`` method for both Lucene-based search engines were identical before, and are identical now. The test I did run -- ``LiveSolrSearchQueryTestCase.test_log_query`` -- passed.
Merge branch 'master' of https://github.com/toastdriven/django-haystack
Merge pull request #568 from duncm/master

Fix exception in SearchIndex.get_model()
Merge branch 'sq-run-refactor' of https://github.com/mattdeboard/django-haystack into mattdeboard-sq-run-refactor
Fixed an ES test that seems like a change in behavior in recent ES versions.
Merge branch 'master' of https://github.com/toastdriven/django-haystack
Merge branch 'mattdeboard-sq-run-refactor'
Prevent spatial filters from stomping on existing filters in ElasticSearch backend.
Restored sorting to ES backend that was broken in d1fa95529553ef8d053308159ae4efc455e0183f.
Make sure an search engine's backend isn't instantiated on every call to the backend but only once. Fixes #580.