Manually keep age of announce messages so as not to invalidate them on #91

	name: Generate documentation
	on:
	push:
	branches:
	- main

	jobs:
	doc:
	name: Document
	runs-on: ubuntu-latest
	permissions:
	contents: write # To push a branch
	pull-requests: write # To create a PR from that branch
	steps:
	- uses: actions/checkout@v4
	with:
	fetch-depth: 0
	- name: Install latest mdbook
	run: \|
	tag=$(curl 'https://api.github.com/repos/rust-lang/mdbook/releases/latest' \| jq -r '.tag_name')
	url="https://github.com/rust-lang/mdbook/releases/download/${tag}/mdbook-${tag}-x86_64-unknown-linux-gnu.tar.gz"
	mkdir mdbook
	curl -sSL $url \| tar -xz --directory=./mdbook
	echo `pwd`/mdbook >> $GITHUB_PATH
	- name: Install rust
	uses: actions-rs/toolchain@v1
	with:
	toolchain: nightly
	- name: Generate reference manual
	run: mdbook build docs
	- name: Generate API documentation
	run: cargo +nightly doc --workspace --no-deps --all-features --target-dir docs/api
	- name: Deploy GitHub Pages
	run: \|
	cd docs
	git worktree add gh-pages
	git config user.name "Deploy from CI"
	git config user.email ""
	cd gh-pages
	git update-ref -d refs/heads/gh-pages
	rm -rf *
	mv ../book/* .
	mkdir docs
	mv ../api/doc/* docs
	git add .
	git commit -m "Deploy $GITHUB_SHA to gh-pages"
	git push --force --set-upstream origin gh-pages

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