Drop Django 1.6, add support for Django 1.10

.travis.yml

@@ -12,4 +12,5 @@ script:
 env:
   - DJANGO="Django>=1.8,<1.9"
   - DJANGO="Django>=1.9,<1.10"
+  - DJANGO="Django>=1.10,<1.11"
 sudo: false

requirements/base.txt

@@ -1 +1 @@
-Django>=1.6,<1.10
+Django>=1.8,<1.11

src/mailer/settings/test.py

@@ -17,3 +17,12 @@
 # To shut up a warning in Django 1.7
 MIDDLEWARE_CLASSES=()
 
+TEMPLATES = [
+    {
+        'BACKEND': 'django.template.backends.django.DjangoTemplates',
+        'APP_DIRS': False,
+        'OPTIONS': {
+            'debug': DEBUG,
+        },
+    },
+]

tox.ini

@@ -1,14 +1,8 @@
 [tox]
 envlist =
-    py27-django16,
-    py33-django16,
-    py34-django16,
-    py27-django18,
-    py34-django18,
-    py35-django18,
-    py27-django19,
-    py34-django19,
-    py35-django19,
+    py{27,34,35}-django18,
+    py{27,34,35}-django19,
+    py{27,34,35}-django110,
 
 [testenv]
 setenv =
@@ -17,7 +11,6 @@ commands =
     python runtests.py
 whitelist_externals = make
 deps =
-    django16: django>1.5,<1.7
-    django17: django>1.6,<1.8
     django18: django>1.7,<1.9
     django19: django>1.8,<1.10
+    django110: django>1.9,<1.11