Update tutorial.rst
Add stats facet support to haystack
nGram fields should not ignore non-alphabetical characters
Ignore missing index during .clear()

404 in indices.delete can only mean that the index is there, no issue
for a delete operation

Fixes #647
Ignore 404 when removing a document from elasticsearch

Fixes #942
Add a note on elasticsearch-py versioning with regards to 1.0
Solr backend: correct usage of pysolr delete

We use HAYSTACK_ID_FIELD in other places but the value passed to
pysolr's delete() method must use the keyword argument ``id``:

https://github.com/toastdriven/pysolr/blob/v3.1.0/pysolr.py#L756

Although the value is passed to Solr an XML tag named ``<id>`` it will
always be checked against the actual ``uniqueKey`` field even if it uses
a custom name:

https://wiki.apache.org/solr/UpdateXmlMessages#A.22delete.22_documents_by_ID_and_by_Query

Closes #943
Fix typo with instantiating Distance units
Merge pull request #946 from gkaplan/spatial-docs-fix

Small docs fix for spatial search example code
Fix logging call in SQS post_process_results (see #648)

This was used in an except: handler and would only be executed when a
load_all() queryset retrieved a model which wasn't registered with the
index.
Merge pull request #938 from Mbosco/patch-1

Update tutorial.rst
Merge https://github.com/toastdriven/django-haystack
All of the everything.