add ddl

Makefile

@@ -0,0 +1,19 @@
+checkfiles = alice/ examples/ tests/ conftest.py
+black_opts = -l 100 -t py38
+py_warn = PYTHONDEVMODE=1
+
+help:
+	@echo "Alice development makefile"
+	@echo
+	@echo  "usage: make <target>"
+	@echo  "Targets:"
+	@echo  "    test	Runs all tests"
+	@echo  "    style       Auto-formats the code"
+
+deps:
+	@which pip-sync > /dev/null || pip install -q pip-tools
+	@pip-sync tests/requirements.txt
+
+style: deps
+	isort -rc $(checkfiles)
+	black $(black_opts) $(checkfiles)