Rework extract functions. #102

	name: Documentation
	on:
	pull_request:
	push:
	branches:
	- main
	tags: "*"
	jobs:
	docs:
	name: Documentation
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- uses: julia-actions/setup-julia@v1
	with:
	version: "1"
	- name: instantiate docs
	run: \|
	julia --project=docs -e '
	using Pkg
	Pkg.develop(PackageSpec(path=pwd()))
	Pkg.instantiate()
	'
	- name: run doctests
	run: \|
	julia --project=docs -e '
	using Documenter: DocMeta, doctest
	using LAMMPS
	DocMeta.setdocmeta!(LAMMPS, :DocTestSetup, :(using LAMMPS); recursive=true)
	doctest(LAMMPS)
	'
	- name: generate docs
	run: julia --project=docs docs/make.jl
	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	DOCUMENTER_KEY: ${{ secrets.DOCUMENTER_KEY }}

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