Drop support for Python 3.5

.readthedocs.yml

@@ -1,4 +1,4 @@
 python:
-    version: 3.5
+    version: 3.7
     pip_install: true
 requirements_file: null

.travis.yml

@@ -7,8 +7,8 @@ addons:
 
 matrix:
   include:
-   - env: TOXENV=py35-dj22-mysql-noelasticsearch
-     python: 3.5
+   - env: TOXENV=py36-dj22-mysql-noelasticsearch
+     python: 3.6
    - env: TOXENV=py36-dj22-postgres-noelasticsearch
      python: 3.6
    - env: TOXENV=py37-dj22-sqlite-noelasticsearch

CHANGELOG.txt

@@ -4,6 +4,7 @@ Changelog
 2.10 (xx.xx.xxxx) - IN DEVELOPMENT
 ~~~~~~~~~~~~~~~~~
 
+ * Removed support for Python 3.5
  * Reorganised Dockerfile in project template to follow best practices (Tomasz Knapik, Jannik Wempe)
  * Added filtering to locked pages report (Karl Hobley)
 

README.md

@@ -57,7 +57,7 @@ _(If you are reading this on GitHub, the details here may not be indicative of t
 Wagtail supports:
 
 * Django 2.2.x and 3.0.x
-* Python 3.5, 3.6, 3.7 and 3.8
+* Python 3.6, 3.7 and 3.8
 * PostgreSQL, MySQL and SQLite as database backends
 
 [Previous versions of Wagtail](https://docs.wagtail.io/en/stable/releases/upgrading.html#compatible-django-python-versions) additionally supported Python 2.7 and Django 1.x.

docs/releases/2.10.rst

@@ -26,3 +26,8 @@ Bug fixes
 
 Upgrade considerations
 ======================
+
+Removed support for Python 3.5
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Python 3.5 is no longer supported as of this release; please upgrade to Python 3.6 or above before upgrading Wagtail.

docs/releases/upgrading.rst

@@ -135,5 +135,5 @@ The compatible versions of Django and Python for each Wagtail release are:
 +-------------------+------------------------------+-----------------------------+
 | 2.9               | 2.2, 3.0                     | 3.5, 3.6, 3.7, 3.8          |
 +-------------------+------------------------------+-----------------------------+
-| 2.10              | 2.2, 3.0                     | 3.5, 3.6, 3.7, 3.8          |
+| 2.10              | 2.2, 3.0                     | 3.6, 3.7, 3.8               |
 +-------------------+------------------------------+-----------------------------+

setup.py

@@ -96,7 +96,6 @@ https://github.com/wagtail/wagtail/.",
         'Operating System :: OS Independent',
         'Programming Language :: Python',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',