export/html, server: fix edge case when dropping a req on another req #336

	---
	name: StrictDoc - Periodic release test
	on:
	schedule:
	- cron: "00 00 * * *"

	pull_request:
	branches: [ "**" ]

	jobs:
	periodic_release_test_linux:
	name: PRT – Linux
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3

	- name: Set up Python 3.
	uses: actions/setup-python@v2
	with:
	python-version: '3.10'

	- name: Install APT packages
	run: sudo apt install -y graphviz

	- name: Upgrade pip
	run: \|
	python -m pip install --upgrade pip

	- name: Install Invoke and Tox
	run: \|
	pip install invoke tox

	- name: Build and test locally
	run: \|
	pip install strictdoc --pre

	- name: Integration tests against the StrictDoc Pip package
	run: \|
	invoke test-integration --strictdoc `which strictdoc`

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