Add difficulty calculation #27

	name: Check version

	on:
	pull_request:
	branches: master

	jobs:
	check-version:
	name: Package version updated
	runs-on: ubuntu-latest

	steps:
	- uses: actions/setup-python@v4
	with:
	python-version: '3.10'

	- uses: actions/checkout@v4
	with:
	submodules: recursive

	- name: Retrieve new version number
	id: new-version
	run: \|
	echo "version=$(python setup.py --version)" >> "$GITHUB_OUTPUT"

	- uses: actions/checkout@v4
	with:
	submodules: recursive
	ref: ${{ github.base_ref }}

	- name: Retrieve target branch version number
	id: target-version
	run: \|
	echo "version=$(python setup.py --version)" >> "$GITHUB_OUTPUT"

	- name: Compare version numbers
	env:
	NEW_VERSION: ${{ steps.new-version.outputs.version }}
	TARGET_VERSION: ${{ steps.target-version.outputs.version }}
	run: \|
	! (printf '%s\n' "$NEW_VERSION" "$TARGET_VERSION" \| sort -C -V)

Provide feedback