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.
Fixed ``SearchIndex.get_model()`` to raise exception instead of returning it.
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.