Remove reference docs for 0.3, 0.4 and upcoming #5168

	name: Build & Deploy Website
	on:
	push:
	branches-ignore:
	- 'gh-pages'
	pull_request:
	branches-ignore:
	- 'gh-pages'
	jobs:
	build:
	name: Build
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v2
	- name: Install OS packages
	run: sudo apt update && sudo apt install -y libffi-dev
	- name: Set up Python
	uses: actions/setup-python@v2
	with:
	python-version: 3.8
	architecture: x64
	- name: Install requirements.txt
	run: pip install -r requirements.txt
	- name: Setup git
	run: \|
	git config --global user.name "$(git --no-pager log --format=format:'%an' -n 1)"
	git config --global user.email "$(git --no-pager log --format=format:'%ae' -n 1)"
	git fetch origin gh-pages
	- name: Deploy upcoming
	run: mike deploy upcoming --push
	if: github.ref == 'refs/heads/main'
	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	- name: Deploy version
	run: mike deploy "$GITHUB_REF_NAME" --push
	if: startsWith(github.ref, 'refs/heads/v')
	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

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