Optimize init and update implementations. #8

# to view logs

	name: release to test.pypi.org

	"on":
	push:
	tags:
	# To publish a test release to test.pypi.org,
	# create and push a tag as follows:
	# git tag -a 0.21.3.rc1 -m "Tag 0.21.3.rc1 for release to test.pypi.org"
	# git push --tags
	# Go to https://github.com/jab/bidict/actions?query=workflow%3A%22Release+to+Test+PyPI%22
	# and watch for a new run of this workflow to publish to test.pypi.org.
	# IMPORTANT: Run the following to clean up after:
	# git tag -d 0.21.3.rc1
	# git push origin :0.21.3.rc1
	- "[0-9]+.[0-9]+.[0-9]+.rc[0-9]+"
	workflow_dispatch:

	jobs:
	main:
	runs-on: ubuntu-latest
	steps:
	- name: check out source
	uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
	- uses: actions/setup-python@0a5c61591373683505ea898e09a3ea4f39ef2b9c
	with:
	python-version: '3.12'
	- run: python -m pip install -U pip setuptools build
	- run: python -m build
	- name: Publish
	uses: pypa/gh-action-pypi-publish@2f6f737ca5f74c637829c0f5c3acd0e29ea5e8bf
	with:
	user: __token__
	password: ${{ secrets.TEST_PYPI_API_TOKEN }}
	repository_url: https://test.pypi.org/legacy/
	verbose: true

	permissions:
	contents: read

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