Add development status

Signed-off-by: Arthit Suriyawongkul <arthit@gmail.com>

Author: bact

pyproject.toml

@@ -13,16 +13,20 @@ license = "Apache-2.0"
 description = "SPDX parser and tools."
 readme = "README.md"
 classifiers = [
+    "Development Status :: 5 - Production/Stable",
     "Intended Audience :: Developers",
     "Intended Audience :: System Administrators",
+    "Operating System :: OS Independent",
     "Programming Language :: Python :: 3",
     "Programming Language :: Python :: 3 :: Only",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
     "Programming Language :: Python :: 3.14",
-    "Operating System :: OS Independent",
+    "Topic :: Software Development :: Documentation",
+    "Topic :: Software Development :: Libraries :: Python Modules",
+    "Topic :: Utilities",
 ]
 requires-python = ">=3.10"
 dependencies = [