Bump version to 0.2.0
diff --git a/Cargo.toml b/Cargo.toml
index 1d7778b..3abb58e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 
 name = "petgraph"
-version = "0.2.0-alpha"
+version = "0.2.0"
 license = "MIT/Apache-2.0"
 authors = [
 "bluss",