fix NA in contrasts error #116

	name: update R package version

	on:
	pull_request:
	types: [closed]
	branches: [main]

	jobs:
	bump-version:
	runs-on: ubuntu-latest
	if: github.event.pull_request.merged == true

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

	- name: Bump version
	run: \|
	# Read the version from DESCRIPTION file
	description=$(cat DESCRIPTION)
	version=$(echo "$description" \| grep "^Version:" \| cut -d " " -f 2)

	# Increment the last part of the version
	parts=(${version//./ })
	parts[2]=$((parts[2] + 1))
	new_version="${parts[0]}.${parts[1]}.${parts[2]}"

	# Replace the version in the DESCRIPTION file
	description=$(echo "$description" \| sed "s/^Version: $version/Version: $new_version/")

	# Write the DESCRIPTION file
	echo "$description" > DESCRIPTION

	- name: Commit changes
	run: \|
	git config --local user.name "$GITHUB_ACTOR"
	git config --local user.email "[email protected]"
	git add DESCRIPTION
	git commit -m "Update version"
	git pull --ff-only
	git push origin

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