Add a check for duplicate versions in ChangeLog #1

	name: changelog lint
	on:
	pull_request:
	paths:
	- 'ChangeLog'

	jobs:
Check failure on line 7 in .github/workflows/changelog.yml View workflow run for this annotation GitHub Actions / .github/workflows/changelog.yml Invalid workflow file `You have an error in your yaml syntax on line 7`
	check-changelog:
	runs-on: ubuntu-latest

	steps:
	- name: Check out repository
	uses: actions/checkout@v2

	- name: Check for duplicate versions in Changelog
	run: \|
	if grep -P 'Version \d+\.\d+\.\d+' ChangeLog \| sort \| uniq -d; then
	echo "Duplicate versions found in Changelog"
	exit 1
	fi

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