abstract fix #93

	## Copied from https://github.com/andycasey/paper-maker/blob/master/action.yml
	on: push

	jobs:
	build:
	runs-on: ubuntu-latest
	env:
	MANUSCRIPT_PATH: ./polpars # exclude the '.tex' / '.pdf' extension!
	LATEX: pdflatex -shell-escape
	BIBTEX: bibtex
	steps:
	- uses: actions/checkout@v1
	- name: Install texlive
	run: \|
	sudo apt-get install texlive-publishers \
	texlive-latex-recommended \
	texlive-latex-extra \
	texlive-fonts-recommended \
	texlive-fonts-extra \
	texlive-science
	- name: Build paper
	run: \|
	cd ${MANUSCRIPT_PATH%/*}
	${LATEX} ${MANUSCRIPT_PATH##*/}.tex
	${BIBTEX} ${MANUSCRIPT_PATH##*/}.aux
	${LATEX} ${MANUSCRIPT_PATH##*/}.tex
	${LATEX} ${MANUSCRIPT_PATH##*/}.tex
	- name: Push paper
	run: \|
	git checkout --orphan ${GITHUB_REF##*/}-pdf
	git rm -rf .github/
	cd ${MANUSCRIPT_PATH%/*}
	git rm -rf .
	git add -f ${MANUSCRIPT_PATH##*/}.pdf
	git -c user.name='paper-maker' -c user.email='paper-maker' commit -m "update pdf"
	git push -q -f https://${{ github.actor }}:${{ secrets.GITHUB_TOKEN }}@github.com/${{ github.repository }} ${GITHUB_REF##*/}-pdf

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