Document how to use Just

[simonw]

I'm using just a lot know, based on this file - I should add that to https://sqlite-utils.datasette.io/en/latest/contributing.html

sqlite-utils/Justfile

Lines 1 to 24 in afbd2b2

	# Run tests and linters
	@default: test lint
	# Run pytest with supplied options
	@test *options:
	pipenv run pytest {{options}}
	# Run linters: black, flake8, mypy, cog
	@lint:
	pipenv run black . --check
	pipenv run flake8
	pipenv run mypy sqlite_utils tests
	cog --check README.md docs/*.rst
	# Rebuild docs with cog
	@cog:
	cog -r README.md docs/*.rst
	@docs: cog
	cd docs && pipenv run make livehtml
	# Apply Black
	@black:
	pipenv run black .

[simonw]

New documentation: https://sqlite-utils.datasette.io/en/latest/contributing.html#using-just-and-pipenv

[simonw]

Tweeted about it too: https://twitter.com/simonw/status/1574481628507668480