add support for providing a custom `requests.Session` in client #184

	name: coverage

	on:
	push:
	branches:
	- master
	paths-ignore:
	- 'docs/**'
	- '*.md'
	pull_request:
	branches:
	- master
	paths-ignore:
	- 'docs/**'
	- '*.md'

	jobs:
	coverage:
	name: Coverage Reports on codecov.io
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- uses: actions/setup-python@v2
	with:
	python-version: 3.7
	- name: Generate coverage report
	run: \|
	pip install pytest pytest-cov responses
	python setup.py testcov
	- name: Upload coverage to Codecov
	uses: codecov/codecov-action@v1
	with:
	file: ./coverage.xml
	directory: ./junit/
	fail_ci_if_error: true

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