feat!: drop Python older than 3.12 (#9)

Author: bdraco

.github/workflows/ci.yml

@@ -36,9 +36,6 @@ jobs:
       fail-fast: false
       matrix:
         python-version:
-          - "3.9"
-          - "3.10"
-          - "3.11"
           - "3.12"
           - "3.13"
         os:

pyproject.toml

@@ -11,15 +11,12 @@ license = { text = "MIT" }
 authors = [
   { name = "J. Nick Koston", email = "bluetooth@koston.org" },
 ]
-requires-python = ">=3.9"
+requires-python = ">=3.12"
 classifiers = [
   "Development Status :: 2 - Pre-Alpha",
   "Intended Audience :: Developers",
   "Natural Language :: English",
   "Operating System :: OS Independent",
-  "Programming Language :: Python :: 3.9",
-  "Programming Language :: Python :: 3.10",
-  "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
   "Programming Language :: Python :: 3.13",
   "Topic :: Software Development :: Libraries",