ci: update release procedure

.github/workflows/tests.yml

@@ -23,11 +23,6 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - name: Dump GitHub context
-        env:
-          GITHUB_CONTEXT: ${{ toJson(github) }}
-        run: echo "$GITHUB_CONTEXT"
-
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0

RELEASING.md

@@ -0,0 +1,12 @@
+# Release Procedure
+
+- Update `CHANGES.rst` (check `git diff vOLD`)
+- Check that GitHub CI is passing
+- Check that docs are building
+- Make a new git tag:
+```console
+$ git tag -a vX.Y.Z -m 'Version X.Y.Z'
+$ git push origin vX.Y.Z
+```
+- Check that GitHub Actions built, tested, and uploaded the release to PyPI
+- Make a GitHub release of tag vX.Y.Z: https://github.com/abacusorg/abacusutils/releases