release.sh: Add helper script for easier package release work

Signed-off-by: Shin'ichiro Kawasaki <kawasaki@juno.dti.ne.jp>

release.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+usage() {
+	echo "Usage: ${0} COMMAND"
+	echo -e "COMMAND:"
+	echo -e "\tbuild"
+	echo -e "\tupload-testpypi FILES"
+	exit 1
+}
+
+case ${1} in
+	build)
+		python setup.py sdist bdist_wheel
+		;;
+	upload-testpypi)
+		shift
+		python -m twine upload --repository testpypi "$@"
+		;;
+	*)
+		usage
+		;;
+esac