Merge pull request #202 from SpecLad/pep-639

Convert the license metadata to the PEP 639 format

Author: kjd

pyproject.toml

@@ -6,15 +6,15 @@ build-backend = "flit_core.buildapi"
 name = "idna"
 description = "Internationalized Domain Names in Applications (IDNA)"
 readme = "README.rst"
-license = {file = "LICENSE.md"}
+license = "BSD-3-Clause"
+license-files = ["LICENSE.md"]
 authors = [
   {name = "Kim Davies", email = "kim+pypi@gumleaf.org"}
 ]
 classifiers = [
   "Development Status :: 5 - Production/Stable",
   "Intended Audience :: Developers",
   "Intended Audience :: System Administrators",
-  "License :: OSI Approved :: BSD License",
   "Operating System :: OS Independent",
   "Programming Language :: Python",
   "Programming Language :: Python :: 3",