Test Python 3.10 release candidate

.github/workflows/test.yml

@@ -6,9 +6,9 @@ jobs:
   build:
     runs-on: ubuntu-latest
     strategy:
-      max-parallel: 5
+      max-parallel: 6
       matrix:
-        python-version: ['3.6', '3.7', '3.8', '3.9', 'pypy3']
+        python-version: ['3.6', '3.7', '3.8', '3.9', '3.10', 'pypy3']
 
     steps:
     - uses: actions/checkout@v2

README.rst

@@ -26,7 +26,7 @@ This Python library contains:
 Installation
 ------------
 
-geojson is compatible with Python 3.6 - 3.9. The recommended way to install is via pip_:
+geojson is compatible with Python 3.6 - 3.10. The recommended way to install is via pip_:
 
 .. code::
 

setup.py

@@ -26,8 +26,8 @@ def test_suite():
 
 
 major_version, minor_version = sys.version_info[:2]
-if not (major_version == 3 and 6 <= minor_version <= 9):
-    sys.stderr.write("Sorry, only Python 3.6 - 3.9 are "
+if not (major_version == 3 and 6 <= minor_version <= 10):
+    sys.stderr.write("Sorry, only Python 3.6 - 3.10 are "
                      "supported at this time.\n")
     exit(1)
 
@@ -48,7 +48,7 @@ def test_suite():
     package_data={"geojson": ["*.rst"]},
     install_requires=[],
     test_suite="setup.test_suite",
-    python_requires=">=3.6, <=3.9",
+    python_requires=">=3.6, <=3.10",
     classifiers=[
         "Development Status :: 5 - Production/Stable",
         "Intended Audience :: Developers",
@@ -61,6 +61,7 @@ def test_suite():
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
+        "Programming Language :: Python :: 3.10",
         "Topic :: Scientific/Engineering :: GIS",
     ]
 )

tox.ini

@@ -4,7 +4,7 @@
 # and then run "tox" from this directory.
 
 [tox]
-envlist = py{36,37,38,39}, pypy3
+envlist = py{36,37,38,39,310}, pypy3
 
 [testenv]
 commands = {envpython} setup.py test