Add a Makefile. Lint code. Fix butterfly open. Add a CHANGELOG.md

Makefile

@@ -0,0 +1,32 @@
+include Makefile.config
+-include Makefile.custom.config
+
+all: install lint check-outdated run-debug
+
+install:
+	test -d $(VENV) || virtualenv $(VENV)
+	$(PIP) install --upgrade --no-cache pip setuptools -e .[lint] devcore
+
+clean:
+	rm -fr $(VENV)
+	rm -fr *.egg-info
+
+lint:
+	$(PYTEST) --flake8 -m flake8 $(PROJECT_NAME)
+	$(PYTEST) --isort -m isort $(PROJECT_NAME)
+
+check-outdated:
+	$(PIP) list --outdated --format=columns
+
+run-debug:
+	sleep 0.5 && $(BROWSER) http://localhost:1212&
+	$(PYTHON) ./butterfly.server.py --port=1212 --unsecure --debug
+
+release:
+	git pull
+	$(eval VERSION := $(shell PROJECT_NAME=$(PROJECT_NAME) $(VENV)/bin/devcore bump $(LEVEL)))
+	git commit -am "Bump $(VERSION)"
+	git tag $(VERSION)
+	$(PYTHON) setup.py sdist bdist_wheel upload
+	git push
+	git push --tags