⬆️ UPGRADE: Relax pin to allow sphinx v4 (#62)

Co-authored-by: Chris Sewell <chrisj_sewell@hotmail.com>

Author: hoefling

.github/workflows/tests.yml

@@ -15,18 +15,18 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
-    - name: Set up Python 3.8
+    - name: Set up Python 3.9
       uses: actions/setup-python@v1
       with:
-        python-version: 3.8
+        python-version: 3.9
     - uses: pre-commit/action@v2.0.0
 
   tests:
 
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.6, 3.7, 3.8]
+        python-version: [3.6, 3.7, 3.8, 3.9]
 
     steps:
     - uses: actions/checkout@v2
@@ -51,10 +51,10 @@ jobs:
     steps:
       - name: Checkout source
         uses: actions/checkout@v2
-      - name: Set up Python 3.7
+      - name: Set up Python 3.9
         uses: actions/setup-python@v1
         with:
-          python-version: 3.7
+          python-version: 3.9
       - name: Build package
         run: |
           pip install wheel

setup.py

@@ -26,7 +26,7 @@
     include_package_data=True,
     install_requires=[
         "docutils",
-        "sphinx>=2,<4",
+        "sphinx>=2,<5",
         'importlib-resources~=3.0.0; python_version < "3.7"',
     ],
     extras_require={

tox.ini

@@ -11,16 +11,17 @@
 # then then deleting compiled files has been found to fix it: `find . -name \*.pyc -delete`
 
 [tox]
-envlist = py37-sphinx3
+envlist = py38-sphinx4
 
 [testenv]
 usedevelop = true
 
-[testenv:py{36,37,38}-sphinx{2,3}]
+[testenv:py{36,37,38,39}-sphinx{2,3,4}]
 extras = testing
 deps =
     sphinx2: sphinx>=2,<3
     sphinx3: sphinx>=3,<4
+    sphinx4: sphinx>=4,<5
 commands = pytest {posargs}
 
 [testenv:docs-{update,clean}]