Python 3.10 support, trove, and ci (#146)

Author: chayim

.circleci/config.yml

@@ -62,6 +62,8 @@ commands:
       - run:
           name: build sdist and wheels
           command: |
+            # https://github.com/python-poetry/poetry/issues/4210
+            poetry config experimental.new-installer false
             poetry build
 
       - run:
@@ -121,6 +123,7 @@ python-versions: &python-versions
         - "3.7.9"
         - "3.8.9"
         - "3.9.4"
+        - "3.10.0"
         - "latest"
 
 workflows:

pyproject.toml

@@ -14,6 +14,7 @@ classifiers=[
     'Programming Language :: Python :: 3.7',
     'Programming Language :: Python :: 3.8',
     'Programming Language :: Python :: 3.9',
+    'Programming Language :: Python :: 3.10',
     'License :: OSI Approved :: BSD License',
     'Development Status :: 5 - Production/Stable'
 ]