Bump version to 0.4.0. (#1745)

python/ray/__init__.py

@@ -61,7 +61,7 @@ from ray.actor import method  # noqa: E402
 
 # Ray version string. TODO(rkn): This is also defined separately in setup.py.
 # Fix this.
-__version__ = "0.3.1"
+__version__ = "0.4.0"
 
 __all__ = ["error_info", "init", "connect", "disconnect", "get", "put", "wait",
            "remote", "log_event", "log_span", "flush_log", "actor", "method",

python/setup.py

@@ -114,7 +114,7 @@ class BinaryDistribution(Distribution):
 
 setup(name="ray",
       # The version string is also in __init__.py. TODO(pcm): Fix this.
-      version="0.3.1",
+      version="0.4.0",
       packages=find_packages(),
       cmdclass={"build_ext": build_ext},
       # The BinaryDistribution argument triggers build_ext.