Add Python 3.15 to tox, CI config, metadata

Author: frenzymadness

.github/workflows/main.yml

@@ -23,7 +23,7 @@ jobs:
       matrix:
         include:
           - arch: amd64
-            toxenv: py36,py39,py310,py311,py312,py313,py314,black,mypy
+            toxenv: py36,py39,py310,py311,py312,py313,py314,py315,black,mypy
           - arch: arm64
             toxenv: py36
           - arch: arm64

setup.cfg

@@ -22,6 +22,7 @@ classifiers =
     Programming Language :: Python :: 3.12
     Programming Language :: Python :: 3.13
     Programming Language :: Python :: 3.14
+    Programming Language :: Python :: 3.15
     Programming Language :: Python :: Implementation :: CPython
     License :: OSI Approved :: MIT License
     Operating System :: POSIX :: Linux

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = black,mypy,py{36,39,310,311,312,313,314}
+envlist = black,mypy,py{36,39,310,311,312,313,314,315}
 isolated_build = True
 
 [testenv]