Set up pre-commit hook and related make targets.

Makefile

@@ -2,13 +2,15 @@
 help: ## List make targets
 	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'
 
-lint: ## Lint source code
-	poetry run flake8
-
+.PHONY: format
 format: ## Format source code
 	poetry run isort .
 	poetry run black .
 
+.PHONY: lint
+lint: ## Lint source code
+	poetry run flake8
+
 .PHONY: test
 test: ## Run non-live tests
 	poetry run pytest -m "not live" --color=yes
@@ -22,3 +24,14 @@ coverage: ## Generate and open coverage report
 	poetry run coverage run --source=pricehist -m pytest
 	poetry run coverage html
 	xdg-open htmlcov/index.html
+
+.PHONY: install-pre-commit-hook
+install-pre-commit-hook: ## Install the git pre-commit hook
+	echo -e "#!/bin/bash\nmake pre-commit" > .git/hooks/pre-commit
+	chmod +x .git/hooks/pre-commit
+
+.PHONY: pre-commit
+pre-commit: ## Checks to run before each commit
+	poetry run isort src tests --check
+	poetry run black src tests --check
+	poetry run flake8