api/setup.py: Upgrade the version to 0.3.1.
Apparently, PyPI is very strict about package file names. Once you
upload files for 0.3.0, and only wish to make minor changes and
re-release it as the same version, it doesn't let you and complains
about identical file names.
@@ -40,7 +40,7 @@ import logging
import six
from typing import Any, Callable, Dict, Iterable, IO, List, Mapping, Optional, Text, Tuple, Union
-__version__ = "0.3.0"
+__version__ = "0.3.1"
logger = logging.getLogger(__name__)
