Make None colum in Fuels_data optional #66

	name: PR Check
	on:
	pull_request:
	types: [opened, synchronize, reopened, ready_for_review, labeled, unlabeled]

	jobs:
	# Enforces update of changelog file on every pull request
	Changelog:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: dangoslen/changelog-enforcer@v3
	with:
	changeLogPath: 'CHANGELOG.md'
	skipLabels: 'Skip-Changelog'
	token: ${{ secrets.GITHUB_TOKEN }}
	missingUpdateErrorMessage: >
	No update to CHANGELOG.md found! Please add an entry describing
	your change and include the pull request tag. Note that we use
	the keepachangelog format (https://keepachangelog.com). If your
	change doesn’t require a changelog entry, please add the
	'Skip-Changelog' label to the pull request.

	# Check if the version number in the Project.toml file is updated
	Version:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Check version number
	if: github.event.pull_request.base.ref == 'develop'
	shell: bash {0}
	run: \|
	git fetch origin develop &> /dev/null
	vdiff=$(git diff -U0 origin/develop -- Project.toml \| grep -E "^\+" \| grep "version =")
	if [ -z "$vdiff" ];
	then
	echo "::error::Error: version number in Project.toml has not been updated." && exit 1

	else
	echo "Version number in Project.toml has been updated."
	echo "New" ${vdiff:1}
	fi

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