Add support for `parabar` and other performance and documentation improvements #3

	# R CMD check workflow.
	name: R-CMD-check

	# Set workflow permissions.
	permissions: read-all

	# Run on pushes and pull requests to the `master` branch.
	on:
	push:
	branches:
	- master
	pull_request:
	branches:
	- master
	# Trigger manually via the GitHub UI.
	workflow_dispatch:

	# Jobs to run.
	jobs:

	# CRAN check job
	R-CMD-check:
	name: ${{ matrix.config.os }} (${{ matrix.config.r }})
	runs-on: ${{ matrix.config.os }}
	strategy:
	fail-fast: false
	matrix:
	config:
	- {os: macos-latest, r: 'release'}
	- {os: windows-latest, r: 'release'}
	- {os: ubuntu-latest, r: 'devel', http-user-agent: 'release'}
	- {os: ubuntu-latest, r: 'release'}
	- {os: ubuntu-latest, r: 'oldrel-1'}
	env:
	GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
	R_KEEP_PKG_SOURCE: yes

	# Actions.
	steps:
	# Checkout the repository.
	- name: Checkout repository
	uses: actions/checkout@v4

	# Setup `pandoc`.
	- name: Setup pandoc
	uses: r-lib/actions/setup-pandoc@v2

	# Setup `R`.
	- name: Setup R
	uses: r-lib/actions/setup-r@v2
	with:
	r-version: ${{ matrix.config.r }}
	http-user-agent: ${{ matrix.config.http-user-agent }}
	use-public-rspm: true

	# Setup package dependencies and extras.
	- name: Install dependencies
	uses: r-lib/actions/setup-r-dependencies@v2
	with:
	extra-packages: any::rcmdcheck
	needs: check

	# Perform the CRAN check.
	- name: Check package
	uses: r-lib/actions/check-r-package@v2
	with:
	upload-snapshots: true
	build_args: 'c("--no-manual","--compact-vignettes=gs+qpdf")'

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