Whitespaces and spelling.
Added distinct option to filter
Added docs for distinct option
Added myself to author files
Merge pull request #94 from shanx/develop

Added distinct option to Filter class for filtering on across relations
documentation formatting & minor corrections
amend 'constructor' to 'initializer'
Merge pull request #95 from evildmp/docs

Amended documentation for typos and formatting
documents URLs notes amended
Merge pull request #96 from evildmp/docs

documents URLs notes amended
Change option label to match a translated one

Option label 'Any Date' is not included in any .po file but 'Any date' is in
django.contrib.admin. Changing this, language translation now works fine.
using same string as django admin
Merge pull request #97 from migonzalvar/fix-option_label_any_date

Change option label to match a translated one
Merge pull request #98 from duduklein/any-date

Using same string as django admin
Don't use discover runner on Django 1.6
Added support for AutoField

Only adding a filter for AutoField when explicitly specified in fields.
Fixing AutoField for Python 3
Merge branch 'tmp' into develop
better .gitignore
Merge branch 'master' into filter_bug