add changelog (#851) #479

	name: deploy

	on: push

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	build-n-publish:
	runs-on: ubuntu-latest
	if: startsWith(github.event.ref, 'refs/tags')
	steps:
	- uses: actions/checkout@v2
	- name: Set up Python 3.7
	uses: actions/setup-python@v2
	with:
	python-version: 3.7
	- name: Install torch
	run: pip install torch
	- name: Install wheel
	run: pip install wheel
	- name: Build MMYOLO
	run: python setup.py sdist bdist_wheel
	- name: Publish distribution to PyPI
	run: \|
	pip install twine
	twine upload dist/* -u __token__ -p ${{ secrets.pypi_password }}

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