Add support for Python 3.10.

Author: Julian

.github/workflows/ci.yml

@@ -72,6 +72,18 @@ jobs:
             toxenv: py39-format_nongpl-build
           - name: 3.9
             toxenv: py39-format_nongpl-tests
+          - name: "3.10"
+            toxenv: py310-noextra-build
+          - name: "3.10"
+            toxenv: py310-noextra-tests
+          - name: "3.10"
+            toxenv: py310-format-build
+          - name: "3.10"
+            toxenv: py310-format-tests
+          - name: "3.10"
+            toxenv: py310-format_nongpl-build
+          - name: "3.10"
+            toxenv: py310-format_nongpl-tests
           - name: 3.9
             toxenv: docs-dirhtml
           - name: 3.9

.github/workflows/packaging.yml

@@ -11,7 +11,7 @@ jobs:
     strategy:
       matrix:
         os: [macos-latest, ubuntu-latest]
-        python-version: [pypy3, 3.7, 3.8, 3.9]
+        python-version: [pypy-3.7, 3.9]
 
     steps:
     - uses: actions/checkout@v2

setup.cfg

@@ -18,6 +18,7 @@ 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
 

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    py{37,38,39,py3}-{noextra,format,format_nongpl}-{build,tests},
+    py{37,38,39,310,py3}-{noextra,format,format_nongpl}-{build,tests},
     readme
     safety
     secrets