Merge pull request #565 from cclauss/patch-2

"Programming Language :: Python :: 3.10",

Author: asenyaev

setup.py

@@ -278,6 +278,7 @@ def main():
             "Programming Language :: Python :: 3.7",
             "Programming Language :: Python :: 3.8",
             "Programming Language :: Python :: 3.9",
+            "Programming Language :: Python :: 3.10",
             "Programming Language :: C++",
             "Programming Language :: Python :: Implementation :: CPython",
             "Topic :: Scientific/Engineering",