Uprev to version 0.42.0 #14

	name: Check Changelog

	on:
	pull_request:
	paths:
	- 'pyproject.toml'
	- 'HISTORY.md'

	jobs:
	check-changelog:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout code
	uses: actions/checkout@v4
	with:
	fetch-depth: 2

	- name: Setup Python
	uses: actions/setup-python@v5
	with:
	python-version: "3.12"

	- name: Install dependencies and check for file changes
	run: \|
	for file in pyproject.toml HISTORY.md; do
	base_name=$(basename $file .${file##*.})
	if git diff --name-only HEAD^ \| grep -q "^$file$"; then
	echo "${base_name}_changed=true" >> $GITHUB_ENV
	else
	echo "${base_name}_changed=false" >> $GITHUB_ENV
	fi
	done

	- name: Verify version change and HISTORY.md update
	if: env.pyproject_changed == 'true'
	run: \|
	VERSION_BEFORE=$(git show HEAD^:pyproject.toml \| python -c "import tomllib, sys; print(tomllib.loads(sys.stdin.read())['project']['version'])")
	VERSION_AFTER=$(python -c "import tomllib; print(tomllib.load(open('pyproject.toml', 'rb'))['project']['version'])")
	if [ "$VERSION_BEFORE" != "$VERSION_AFTER" ] && [ "$history_changed" == "false" ]; then
	echo "Version changed in pyproject.toml but no changes in HISTORY.md"
	exit 1
	elif [ "$VERSION_BEFORE" != "$VERSION_AFTER" ] && [ "$history_changed" == "true" ]; then
	echo "Version changed and HISTORY.md updated."
	else
	echo "Version did not change. Changes to HISTORY.md not required."
	fi

	- name: No changes detected
	if: env.pyproject_changed == 'false' && env.history_changed == 'false'
	run: echo "No changes detected in pyproject.toml or HISTORY.md. Everything is fine."

Provide feedback