Add Python 3.10 to test matrix and classifiers

.github/workflows/ci.yml

@@ -12,6 +12,6 @@ jobs:
           python-version: "3.6"
       - uses: actions/setup-python@v1
         with:
-          python-version: "3.9"
+          python-version: "3.10"
       - run: python -m pip install --upgrade tox
       - run: tox

setup.cfg

@@ -17,6 +17,7 @@ classifiers =
 	Programming Language :: Python :: 3.7
 	Programming Language :: Python :: 3.8
 	Programming Language :: Python :: 3.9
+	Programming Language :: Python :: 3.10
 	Topic :: Software Development :: Disassemblers
 	Topic :: System
 	Topic :: Utilities

tox.ini

@@ -1,7 +1,7 @@
 [tox]
 # When updating the Python versions here,
 # please also update the corresponding Python versions in the GitHub Actions workflow (.github/workflows/ci.yml).
-envlist = py{36,39},flake8,mypy,package
+envlist = py{36,310},flake8,mypy,package
 
 [testenv]
 commands = python -m unittest discover --start-directory ./tests