Remove the Django requirement from this application (#49)

We should probably only pin Wagtail in this application, and support
the version range for Django that our Wagtail version specifies.

.travis.yml

@@ -8,13 +8,11 @@ matrix:
       python: 3.6
     - env: TOXENV=py36-dj111-wag23
       python: 3.6
-    - env: TOXENV=py36-dj20-wag23
-      python: 3.6
     - env: TOXENV=py36-dj22-wag23
       python: 3.6
-    - env: TOXENV=py36-dj22-wag28
+    - env: TOXENV=py36-dj22-wag29
       python: 3.6
-    - env: TOXENV=py38-dj22-wag28
+    - env: TOXENV=py38-dj22-wag29
       python: 3.8
 
 install:

README.md

@@ -21,8 +21,8 @@ Wagtail-Flags adds a Wagtail admin UI and Wagtail Site-based condition on top of
 ## Dependencies
 
 - Python 3.6, 3.8
-- Django 1.11, 2.0, 2.2
-- Wagtail 2.3, 2.8
+- Wagtail 2.3, 2.9
+- Django 1.11, 2.2
 - Django-Flags 4.2+ 
 
 It should be compatible at all intermediate versions, as well.

setup.py

@@ -1,6 +1,6 @@
 from setuptools import find_packages, setup
 
-install_requires = ["wagtail>=2.3,<2.9", "django-flags>=4.2,<5.0"]
+install_requires = ["wagtail>=2.3,<2.10", "django-flags>=4.2,<5.0"]
 
 testing_extras = ["coverage>=3.7.0"]
 
@@ -13,16 +13,14 @@
     long_description=open("README.md", "r").read(),
     long_description_content_type="text/markdown",
     license="CC0",
-    version="4.2.0",
+    version="4.2.1",
     include_package_data=True,
     packages=find_packages(),
     install_requires=install_requires,
     extras_require={"testing": testing_extras},
     classifiers=[
         "Framework :: Django",
         "Framework :: Django :: 1.11",
-        "Framework :: Django :: 2.0",
-        "Framework :: Django :: 2.1",
         "Framework :: Django :: 2.2",
         "Framework :: Wagtail",
         "Framework :: Wagtail :: 2",

tox.ini

@@ -2,8 +2,8 @@
 skipsdist=True
 envlist=
     lint,
-    py{36}-dj{111,20,22}-wag{23},
-    py{36,38}-dj{22}-wag{28}
+    py{36}-dj{111,22}-wag{23},
+    py{36,38}-dj{22}-wag{29}
 
 [testenv]
 install_command=pip install -e ".[testing]" -U {opts} {packages}
@@ -20,11 +20,9 @@ basepython=
 
 deps=
     dj111: Django>=1.11,<1.12
-    dj20: Django>=2.0,<2.1
-    dj21: Django>=2.1,<2.2
-    dj22: Django>=2.2,<2.3
+    dj22:  Django>=2.2,<2.3
     wag23: wagtail>=2.3,<2.4
-    wag28: wagtail>=2.8,<2.9
+    wag29: wagtail>=2.9,<2.10
 
 [testenv:lint]
 basepython=python3.6