changes to changelog generation (no pun intended)

Makefile

@@ -14,7 +14,7 @@ build_docs:
 	sphinx-build -b html docs/ docs/_build/
 
 changelog:
-	python3 generate_changelog.py
+	@echo "Not supported any more. Run ./generate_changelog.py <version_number> instead!"
 
 sass_watch:
 	sass --watch locust/static/sass:locust/static/css

generate_changelog.py

@@ -1,10 +1,17 @@
+#!/usr/bin/env python3
+
 import subprocess
 import os
+import sys
 
 github_api_token = (
     os.getenv("CHANGELOG_GITHUB_TOKEN") if os.getenv("CHANGELOG_GITHUB_TOKEN") else input("Enter Github API token: ")
 )
-version = input("Enter Locust version number (--future-release argument): ")
+
+if len(sys.argv) < 2:
+    raise Exception("Provide a version number as parameter (--future-release argument)")
+
+version = sys.argv[1]
 
 cmd = [
     "github_changelog_generator",
@@ -16,6 +23,10 @@
     "locust",
     "--exclude-labels",
     "duplicate,question,invalid,wontfix,cantfix,stale",
+    "--header-label",
+    "# Changelog\nNote that PRs for the latest version are sometimes missing here, check [github](https://github.com/locustio/locust/releases) for the latest info.",
+    "--since-tag",
+    "0.9.0",
     "--future-release",
     version,
 ]