tests

fix invalid specifier that was breaking example notebooks & pip-installing from GitHub/sdist. Also update readthedocs configuration files and remove testing on python 2.7 due to breaking changes in readthedocs and GitHub actions. #90

	# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
	# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions

	name: tests

	on:
	push:
	paths-ignore:
	- 'LICENSE'
	- 'README.md'
	- 'docs/**'
	pull_request:
	paths-ignore:
	- 'LICENSE'
	- 'README.md'
	- 'docs/**'

	jobs:
	build:

	runs-on: ubuntu-20.04
	strategy:
	matrix:
	python-version: [3.5, 3.6, 3.7, 3.8]
	TF: [1.13.1, 1.14, 1.15, 2.0, 2.1, 2.2, 2.*]
	exclude:
	- python-version: 2.7
	TF: 2.2
	- python-version: 3.7
	TF: 2.0
	- python-version: 3.8
	TF: 1.13.1
	- python-version: 3.8
	TF: 1.14
	- python-version: 3.8
	TF: 1.15
	- python-version: 3.8
	TF: 2.0
	- python-version: 3.8
	TF: 2.1

	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 test dependencies
	run: \|
	python -m pip install --upgrade pip
	python -m pip install pytest
	pip install -U setuptools
	pip install pytest_mock
	pip install pytest_cov
	pip install codecov
	- name: Install package dependencies with TF ${{ matrix.TF }}
	run: \|
	pip install 'numpy<1.24' tensorflow==${{ matrix.TF }} 'protobuf<=3.20'
	export PYTHONPATH=$PYTHONPATH:$(pwd)
	- name: Install this package
	run: \|
	python setup.py install
	- name: Test with pytest
	run: \|
	coverage run --source=psychrnn -m pytest
	coverage xml
	- name: Upload coverage to Codecov
	uses: codecov/codecov-action@v1
	if: matrix.python-version == '3.8' && matrix.TF == '2.2'

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