ENC: Add optional returns options #119

	# This workflow will build the doc
	name: Documentation

	on:

	push:
	branches:
	- main

	pull_request:
	branches:
	- main
	- maintenance/**

	# Allows you to run this workflow manually from the Actions tab
	workflow_dispatch:

	jobs:
	ubuntu:
	name: (${{ matrix.os }} \| py-${{ matrix.python-version }})
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: ['ubuntu-20.04', 'ubuntu-22.04']
	python-version: ['3.8', '3.9', '3.10', '3.11']
	steps:
	- uses: actions/checkout@v3

	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}

	- name: Install dependencies
	run: \|
	sudo apt-add-repository ppa:ubuntugis/ubuntugis-unstable
	sudo apt-get update
	sudo apt-get install build-essential make gcc gfortran gdal-bin libgdal-dev
	python -m venv test
	. test/bin/activate
	python -m pip install --upgrade pip
	pip install wheel numpy
	pip install gdal==$(gdal-config --version)
	pip install -r requirements-dev.txt

	- name: Build
	run: \|
	. test/bin/activate
	make

	- name: Build Documentation
	run: \|
	. test/bin/activate
	make doc

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