Fix bug with Date fields and SOQL.

Fixes https://github.com/freelancersunion/django-salesforce/issues/10
Merge pull request #16 from balsdorf/master

Fix bug with Date fields and SOQL. Damn, that was easy.
added balsdorf to authors.md
remove include package data, since setuptools_git will handle that for us
fixed typo
Merge pull request #20 from jbarone/master

fixed typo
defined log variable in __init__ which is used later on
Merge pull request #21 from piquadrat/feature/fix-log-var

defined log variable in __init__ which is used later on
added new authors
Merge branch 'master' of github.com:freelancersunion/django-salesforce
Fix precision error when deserializing field to DecimalFields
Fix bug when SALESFORCE_DB_ALIAS not defined in settings.py

SALESFORCE_DB_ALIAS is listed as an optional settings variable.

Mimic the use of sf_alias in router.py.
Merge pull request #25 from jacobwegner/fix-reauthentication-bug

Fix bug when SALESFORCE_DB_ALIAS not defined in settings.py
Override WhereNode from django.db.models.sql.where to use SOQL NOT.

SQL negation: SELECT foo FROM bar WHERE Status = ‘Awesome’ NOT( Having_fun = false AND Out_of_cash = false)
SOQL negation: SELECT foo FROM bar WHERE Status = ‘Awesome’ AND (NOT( Having_fun = false) AND NOT(Out_of_cash = false))
Test that exclude query construction returns a queryset
Fix typ in docstring.
CursorWrapper eroneously sending connection_created signal a second time (and sends itself, instead of a Connection Object).  This can cause handlers listening to that signal to fail
Add conditional for Django 1.5 or 1.6 to override their version of WhereNode.as_sql
prior to django1.6 it was on you to send this signal, typically just after the Cusor gets set up
fixed tabbing, updated editorconfig