Merge release/0.1.0-preview3 into master

Author: untitaker

setup.py

@@ -4,7 +4,7 @@
 
 setup(
     name="sentry-sdk",
-    version="0.1.0-preview2",
+    version="0.1.0-preview3",
     author="Sentry Team and Contributors",
     author_email="[email protected]",
     url="https://github.com/getsentry/sentry-sdk",