Ensure submodules are checked out when building a release.

Closes: #64

Author: Julian

.github/workflows/ci.yml

@@ -87,6 +87,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@v3
+        with:
+          submodules: "recursive"
       - name: Set up Python
         uses: actions/setup-python@v4
         with:

docs/changes.rst

@@ -2,6 +2,16 @@
 Changelog
 =========
 
+v0.30.1
+-------
+
+* Ensure that an ``sdist`` contains the test suite JSON files.
+
+v0.30.0
+-------
+
+* Declare support for Python 3.12.
+
 v0.29.3
 -------