Try to create a github release pushing a git tag

.github/changelogtext.sh

@@ -0,0 +1,33 @@
+#!/usr/bin/env bash
+set -e
+
+PACKAGE_VERSION=${1:-$(sed -r 's/__version__ = "(.*)"/\1/' ravenpackapi/version.py)}
+
+# Make sure the version is in the changelog
+grep -n "^## \[v$PACKAGE_VERSION] \(.*\)" CHANGELOG.md >/dev/null \
+    || (echo "Error. Version $PACKAGE_VERSION not in changelog" \
+    && exit 1)
+LINE_BEFORE=$( \
+    grep -n "^## \[v$PACKAGE_VERSION] \(.*\)" CHANGELOG.md \
+    | cut -d: -f1 \
+    | head -n 1 \
+)
+
+# * cut from after the header of the current package version
+# * select all the other headers, showing the linue numbers
+# * get the line number of the first header
+LINE_AFTER=$( \
+    tail -n +$LINE_BEFORE CHANGELOG.md \
+    | tail -n +2 \
+    | grep -n "^## \[v.*\] \(.*\)" \
+    | sed -r 's/(.*):## \[v(.*)\] \(.*\)/\1:\2/' \
+    | cut -d: -f1 \
+    | head -1
+)
+
+LINE_BEFORE=$((LINE_BEFORE + 1))
+LINE_AFTER=$((LINE_AFTER + LINE_BEFORE))
+LINE_AFTER=$((LINE_AFTER - 2))
+# Extract range and remove empty lines from the beginning and end of the file
+sed -n "$LINE_BEFORE,$LINE_AFTER p" CHANGELOG.md \
+    | awk 'NF {p=1} p' | tac | awk 'NF {p=1} p' | tac

.github/workflows/create_release.yml

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+name: Create a github release for a git tag
+on:
+  push:
+    tags:
+      - 'v*.*.*'
+      - 'v*.*'
+jobs:
+  # Check that the tag matches the lastest version in the code
+  check-version:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Check version
+      run: |
+        # Get the latest version from the code
+        latest_version=$(sed -r 's/__version__ = "(.*)"/\1/' ravenpackapi/version.py)
+        # Get the tag from the git tag
+        tag=$(echo $GITHUB_REF | sed -r 's/refs\/tags\/v(.*)/\1/')
+        # Check that the tag matches the latest version
+        if [ "$latest_version" != "$tag" ]; then
+          echo "The tag $tag does not match the latest version $latest_version"
+          exit 1
+        fi
+
+  # Create a release
+  github-release:
+    name: >-
+      📦✍ Sign the package with Sigstore
+      and upload them to GitHub Release
+    runs-on: ubuntu-latest
+    needs: check-version
+    steps:
+    - uses: actions/checkout@v4
+    - name: Dump the changelog
+      run: .github/changelogtext.sh > '${{ github.ref_name }}.md'
+    - name: Create GitHub Release
+      env:
+        GITHUB_TOKEN: ${{ github.token }}
+      run: |
+        latest_version=$(sed -r 's/__version__ = "(.*)"/\1/' ravenpackapi/version.py)
+        gh release create '${{ github.ref_name }}' -F '${{ github.ref_name }}.md' --title "Version $latest_version" --repo '${{ github.repository }}'