Bump version and update metadata referring to old home repo

CONTRIBUTING.md

@@ -133,11 +133,11 @@ Where we need help:
 * Issues labeled ["good first issue"][gfi] are issues where fixing them would be
   a great introduction to the code base.
 
-[help-wanted]: https://github.com/fitzgen/wee_alloc/labels/help%20wanted
+[help-wanted]: https://github.com/rustwasm/wee_alloc/labels/help%20wanted
 
-[mentored]: https://github.com/fitzgen/wee_alloc/labels/mentored
+[mentored]: https://github.com/rustwasm/wee_alloc/labels/mentored
 
-[gfi]: https://github.com/fitzgen/wee_alloc/labels/good%20first%20issue
+[gfi]: https://github.com/rustwasm/wee_alloc/labels/good%20first%20issue
 
 ## Team
 
@@ -154,4 +154,4 @@ word.
 **We need more team members!**
 [Drop a comment on this issue if you are interested in joining.][join]
 
-[join]: https://github.com/fitzgen/wee_alloc/issues/6
+[join]: https://github.com/rustwasm/wee_alloc/issues/6

wee_alloc/Cargo.toml

@@ -10,11 +10,11 @@ description = "wee_alloc: The Wasm-Enabled, Elfin Allocator"
 license = "MPL-2.0"
 name = "wee_alloc"
 readme = "../README.md"
-repository = "https://github.com/fitzgen/wee_alloc"
-version = "0.3.0"
+repository = "https://github.com/rustwasm/wee_alloc"
+version = "0.4.0"
 
 [badges]
-travis-ci = { repository = "fitzgen/wee_alloc" }
+travis-ci = { repository = "rustwasm/wee_alloc" }
 
 [features]
 default = ["size_classes"]