Make a release with a Makefile target

.github/release.yml

@@ -1,4 +1,6 @@
 changelog:
+  exclude:
+    labels: [release]
   categories:
     - title: Features
       labels: [feat]

Makefile

@@ -1,4 +1,4 @@
-.PHONY: lint test clean
+.PHONY: lint test clean release
 
 .deps: Easkfile
 	eask install-deps
@@ -17,3 +17,20 @@ test: .compile
 clean:
 	eask clean all
 	@rm -f .deps .compile
+
+release: lint test
+	@test -n "$(VERSION)" || { echo "Give the version: make release VERSION=x.y.z"; exit 1; }
+	@git diff --quiet HEAD || { echo "Commit your changes first."; exit 1; }
+	git switch -c release/v$(VERSION)
+	sed 's/^;; Version: .*/;; Version: $(VERSION)/' magit-standup.el > magit-standup.el.new
+	mv magit-standup.el.new magit-standup.el
+	sed '2s/"[0-9][0-9.]*"/"$(VERSION)"/' Easkfile > Easkfile.new
+	mv Easkfile.new Easkfile
+	@grep -qx ";; Version: $(VERSION)" magit-standup.el
+	@grep -qx '         "$(VERSION)"' Easkfile
+	git commit -am "Bump the version to $(VERSION)"
+	@echo
+	@echo "Next:"
+	@echo "  git push -u origin release/v$(VERSION)"
+	@echo "  gh pr create --fill --label release"
+	@echo "Merge it, and the workflow makes the tag and the release."

README.org

@@ -83,6 +83,26 @@ git log --format='%aN <%aE>' -1
 The variable =magit-standup-author= (singular) still works, but it is
 obsolete since version 0.2.0. Use =magit-standup-authors= instead.
 
+* Release
+
+To make a release, run:
+
+#+begin_src shell
+make release VERSION=0.3.0
+#+end_src
+
+The target runs the linter and the tests. Then it creates the branch
+=release/v0.3.0= and commits the new version. Push the branch and open
+a pull request:
+
+#+begin_src shell
+git push -u origin release/v0.3.0
+gh pr create --fill --label release
+#+end_src
+
+When you merge the pull request, a workflow creates the tag and
+publishes the release with the generated notes.
+
 * License
 
 GPL-3.0-or-later