add and document preview and fullscreen option (#65) #89

	name: coverage
	on: [push, pull_request]
	jobs:
	linux:
	name: linux
	runs-on: ubuntu-22.04
	steps:
	- name: Checkout Code
	uses: actions/checkout@v3
	- name: Run Tests
	run: \|
	uname -a
	export MRU_PROFILE=1
	export VIMPRG=vim
	$VIMPRG --version
	cd ./test
	./run_mru_tests.sh
	- name: Install Python
	uses: actions/setup-python@v3
	with:
	python-version: 3.7.14
	- name: Install covimerage
	run: \|
	pip install covimerage
	covimerage --version
	- name: Run covimerage
	run: \|
	cd ./test
	covimerage write_coverage mru_profile.txt
	- name: Take coverage
	run: \|
	cd ./test
	coverage report
	coverage xml
	- name: Upload coverage to codecov
	uses: codecov/codecov-action@v3
	with:
	token: ${{ secrets.CODECOV_TOKEN }}
	file: ./test/coverage.xml

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