Also pin pyo3 dependency in the example

rth · rth · commit 8b9a22b978eb · 2018-11-25T23:21:25.000+01:00
diff --git a/examples/simple-extension/Cargo.toml b/examples/simple-extension/Cargo.toml
@@ -12,5 +12,5 @@ numpy = { path = "../.." }
 ndarray = "0.12"
 
 [dependencies.pyo3]
-version = "0.5.0-alpha.2"
+version = "= 0.5.0"
 features = ["extension-module"]
