Fixed update_index process leak.
Fixed logging in simple_backend.
Update unittest2 import logic

We'll try to get it from Django 1.3+ but Django 1.2 users will need to install
it manually
Suppress console DeprecationWarnings
Solr tests: clean unused imports
Tests: Solr: fail immediately on config errors
Tests: enable Solr content extraction handler

This is needed for the test_content_extraction test to pass
Add a minimal .travis.yml file to suppress build spam

Until the travis-config branch is merged in, this can be spread around to avoid
wasting time running builds before we're ready
Merge pull request #651 from acdha/unittest2-fix

Update unittest2 import logic so the tests can actually be run
Merge pull request #652 from acdha/solr-content-extraction-test-fix

Fix the Solr content extraction handler tests
Better unittest2 detection

This supports Python 2.6 and earlier by shifting the import to look
towards the future name rather than the past
Merge branch 'unittest2-fix'
Added Pitchup to Who Uses.
Merge pull request #643 from stephenmcd/master

Fixed logging in simple_backend
Increased the number of terms facets returned by the Elasticsearch backend to 100 from the default 10 to work around an issue upstream.

This is hopefully only temporary until it's fixed in Elasticsearch, see https://github.com/elasticsearch/elasticsearch/issues/1776.
Added Gidsy to list of who uses Haystack.
Updated elasticsearch backend to use a newer pyelasticsearch release that features an improved API , connection pooling and better exception handling.
Fixes incorrect call to put_mapping on elasticsearch backend
Elasticsearch geo_bounding_box filter expects top_left (northwest) and bottom_right (southeast).
Haystack's elasticsearch backend is passing northeast and southwest coordinates instead.
All backends: fixed more_like_this & deferreds

Django removed the get_proxied_model helper function in the 1.3 dev
cycle:

https://code.djangoproject.com/ticket/17678

This change adds support for the simple new property access used by 1.3+

BACKWARD INCOMPATIBLE: Django 1.2 is no longer supported