Merge pull request #350 from quantumlib/release-v0_9_3

Update version to 0.9.3

Author: 95-martin-orion

setup.py

@@ -75,7 +75,7 @@ def build_extension(self, ext):
 # README file as long_description.
 long_description = open("README.md", encoding="utf-8").read()
 
-__version__ = "0.9.2"
+__version__ = "0.9.3"
 
 setup(
     name="qsimcirq",