Added trove specifiers for Python versions 3.10 and 3.11

Author: ptmcg

setup.py

@@ -41,6 +41,8 @@ class includes separate parse and evaluate methods, handling operator precedence
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
+        "Programming Language :: Python :: 3.10",
+        "Programming Language :: Python :: 3.11",
         "Topic :: Software Development",
         "Topic :: Software Development :: Libraries :: Python Modules",
         "Topic :: Software Development :: User Interfaces",