⬆️ UPGRADE: Add Python 3.10 support (#422)

.github/workflows/tests.yml

@@ -26,9 +26,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        python-version: [3.7, 3.8, 3.9]
-        # sphinx 3 currently fails, because of: https://github.com/sphinx-doc/sphinx/issues/10291
-        # sphinx: [">=3,<4", ">=4,<5"]
+        python-version: ["3.7", "3.8", "3.9", "3.10"]
         sphinx: [">=4,<5"]
         include:
           - os: windows-latest

pyproject.toml

@@ -19,6 +19,7 @@ classifiers = [
     "Programming Language :: Python :: 3.7",
     "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: Implementation :: CPython",
     "Programming Language :: Python :: Implementation :: PyPy",
     "Topic :: Software Development :: Libraries :: Python Modules",
@@ -88,7 +89,7 @@ rtd = [
     "sympy",
 ]
 testing = [
-    "coverage<5.0",
+    "coverage~=6.4",
     "beautifulsoup4",
     "ipykernel~=5.5",
     "ipython!=8.1.0", # see https://github.com/ipython/ipython/issues/13554
@@ -100,8 +101,8 @@ testing = [
     "numpy",
     # TODO: 1.4.0 has some warnings that need to be fixed in the tests.
     "pandas<1.4",
-    "pytest~=5.4",
-    "pytest-cov~=2.8",
+    "pytest~=7.1",
+    "pytest-cov~=3.0",
     "pytest-regressions",
     "pytest-param-files~=0.3.3",
     "sympy",

tox.ini

@@ -16,7 +16,7 @@ envlist = py38-sphinx4
 [testenv]
 usedevelop = true
 
-[testenv:py{37,38,39}-sphinx{3,4}]
+[testenv:py{37,38,39,310}-sphinx{3,4}]
 extras = testing
 deps =
     sphinx3: sphinx>=3,<4