Fixed autocomplete() method: spaces in query
added test for autocomplete whitespace fix
removed python 1.4 / python 3.2 tox env because thats not possible

also pinned versions of requirements for testing
Fixed #575 & #838, where a change in Whoosh 2.5>
required explicitly setting the Searcher.search() limit
to None to restore correct results.

Thanks to scenable and Shige Abe (typeshige) for
the initial reports, and to scenable for finding
the root issue in Whoosh.
Fix documentation regarding ModelSearchIndex to match current behavior

Closes #606. Thanks to @bradleyayers for the report.
Remove bit about SearchQuerySet.load_all_queryset deprecation

That method was entirely removed in commit b8048dc0e9e3.

Closes #607. Thanks to @bradleyayers for the report.
Merge pull request #881 from benspaulding/docs/issue-606

Fix documentation regarding ModelSearchIndex to match current behavior
Merge pull request #882 from benspaulding/docs/issue-607

Remove bit about SearchQuerySet.load_all_queryset deprecation
Fixed ValueError exception when SILENTLY_FAIL=True
Added pabluk to AUTHORS
fixed typo in AUTHORS