Bump Substrate (#986)

* Bump Substrate to commit `0495ead4`

* Derive MaxEncodedLen for MillauHash

* Add new config params to Balances pallet

* Update Millau and Rialto service files

* Add new Config items to mock runtime

* Bump Substrate to `37bb3ae7`

* Update Aura worker params

bridges/primitives/chain-millau/src/millau_hash.rs

@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity Bridges Common.  If not, see <http://www.gnu.org/licenses/>.
 
+use frame_support::traits::MaxEncodedLen;
 use parity_util_mem::MallocSizeOf;
 use sp_runtime::traits::CheckEqual;
 
@@ -22,7 +23,7 @@ use sp_runtime::traits::CheckEqual;
 
 fixed_hash::construct_fixed_hash! {
 	/// Hash type used in Millau chain.
-	#[derive(MallocSizeOf)]
+	#[derive(MallocSizeOf, MaxEncodedLen)]
 	pub struct MillauHash(64);
 }