Update to latest Substrate (#753)

* Attempt to merge, but not easy

* Bump runtime version

runtime/common/src/attestations.rs

@@ -99,7 +99,7 @@ decl_storage! {
 		pub RecentParaBlocks: map T::BlockNumber => Option<IncludedBlocks<T>>;
 
 		/// Attestations on a recent parachain block.
-		pub ParaBlockAttestations: double_map T::BlockNumber, blake2_128(Hash) => Option<BlockAttestations<T>>;
+		pub ParaBlockAttestations: double_map T::BlockNumber, hasher(blake2_128) Hash => Option<BlockAttestations<T>>;
 
 		// Did we already have more attestations included in this block?
 		DidUpdate: bool;

runtime/kusama/src/lib.rs

@@ -77,7 +77,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	spec_name: create_runtime_str!("kusama"),
 	impl_name: create_runtime_str!("parity-kusama"),
 	authoring_version: 2,
-	spec_version: 1038,
+	spec_version: 1039,
 	impl_version: 0,
 	apis: RUNTIME_API_VERSIONS,
 };