v0.9.0 prep (#2959)

* bump version and unify spec version

* bump substrate

* spec_version to 900

polkadot/runtime/westend/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "westend-runtime"
-version = "0.8.31"
+version = "0.9.0"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2018"
 build = "build.rs"

polkadot/runtime/westend/src/lib.rs

@@ -90,7 +90,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	spec_name: create_runtime_str!("westend"),
 	impl_name: create_runtime_str!("parity-westend"),
 	authoring_version: 2,
-	spec_version: 51,
+	spec_version: 900,
 	impl_version: 0,
 	#[cfg(not(feature = "disable-runtime-api"))]
 	apis: RUNTIME_API_VERSIONS,