restores support django>=1.10

CHANGES

@@ -1,7 +1,6 @@
 Release 2.0 (dev)
 -----------------
-* drop official support to Django < 2.0
-* drop official support to python 2.x
+* drop official support to Django < 1.10
 * add support Django 2.1
 * removed deprecated api `concurrency_check`
 * BACKWARD INCOMPATIBLE: version field is now mandatory in any save operation. Use ``VERSION_FIELD_REQUIRED=False`` to have the old behaviour.

src/concurrency/compat.py

@@ -1,12 +1,13 @@
 # -*- coding: utf-8 -*-
 from __future__ import absolute_import, print_function, unicode_literals
+import django
 
-# try:
+# if django.VERSION <(1,9):
 #     from django.template.base import TemplateDoesNotExist
-# except ImportError:
+# else:
 from django.template.exceptions import TemplateDoesNotExist  # noqa - django 1.9
 
-# try:
-from django.urls.utils import get_callable
-# except ImportError:
+# if django.VERSION <(1,9):
 #     from django.core.urlresolvers import get_callable  # noqa
+# else:
+from django.urls.utils import get_callable

tox.ini

@@ -1,5 +1,6 @@
 [tox]
-envlist = d{20,21}-py{35,36}-{pg,sqlite,mysql}
+envlist = d{110,111}-py{27,35,36,py}-{pg,sqlite,mysql},
+          d{20,21}-py{35,36}-{pg,sqlite,mysql}
 
 
 [pytest]
@@ -50,10 +51,13 @@ deps=
     pytest-django
     pytest-echo
     pytest-pythonpath
-    py{34,35,36,37}-pg: psycopg2
+    py{27,34,35,36,37}-pg: psycopg2
     pypy-pg: psycopg2cffi
     mysql: mysqlclient
     docs: -rdocs/requirements.pip
+    d110: django>=1.10,<1.11
+    d111: django>=1.11,<1.12
+    d20: django>=2.0,<2.1
     d20: django>=2.0,<2.1
     d21: django>=2.1,<2.2