Bump version to 0.3.0 (#706)

Strilanc · CirqBot · commit 546d16a0b30c · 2018-07-17T23:22:22.000-07:00
diff --git a/cirq/_version.py b/cirq/_version.py
@@ -17,6 +17,6 @@
 import sys
 
 if sys.version_info.major == 2:
-    __version__ = "0.0.2.dev27"  # coverage: ignore
+    __version__ = "0.3.0.27"  # coverage: ignore
 else:
-    __version__ = "0.0.2.dev35"
+    __version__ = "0.3.0.35"
