Add support for Python 3.10, drop Python 3.5

- Add support for Python 3.10 released on 2021-10-04
- Drop support for Python 3.5 since it has reached end-of-life

.github/workflows/ci.yaml

@@ -32,11 +32,11 @@ jobs:
     strategy:
       matrix:
         python-version:
-          - 3.5
           - 3.6
           - 3.7
           - 3.8
           - 3.9
+          - 3.10
           - nightly
     steps:
       - name: Checkout

setup.cfg

@@ -27,11 +27,11 @@ classifiers =
   Intended Audience :: Developers
   License :: OSI Approved :: GNU General Public License v3 (GPLv3)
   Programming Language :: Python :: 3
-  Programming Language :: Python :: 3.5
   Programming Language :: Python :: 3.6
   Programming Language :: Python :: 3.7
   Programming Language :: Python :: 3.8
   Programming Language :: Python :: 3.9
+  Programming Language :: Python :: 3.10
   Topic :: Software Development
   Topic :: Software Development :: Debuggers
   Topic :: Software Development :: Quality Assurance
@@ -46,7 +46,7 @@ project_urls =
 [options]
 packages = find:
 
-python_requires = >=3.5
+python_requires = >=3.6
 
 include_package_data = True
 install_requires =