Updated to later version of substrate so that it compiles. (#295)

* Updated to later version of substrate so that it compiles.

(Referencing substrate this way you only have to search and replace one string to upgrade)

* cargo fmt

src/error.rs

@@ -139,7 +139,11 @@ impl RuntimeError {
             DispatchError::CannotLookup => Ok(Self::CannotLookup),
             DispatchError::ConsumerRemaining => Ok(Self::ConsumerRemaining),
             DispatchError::NoProviders => Ok(Self::NoProviders),
-            DispatchError::Other(msg) => Ok(Self::Other(msg.into())),
+            DispatchError::Arithmetic(_math_error) => {
+                Ok(Self::Other("math_error".into()))
+            }
+            DispatchError::Token(_token_error) => Ok(Self::Other("token error".into())),
+            DispatchError::Other(msg) => Ok(Self::Other(msg.to_string())),
         }
     }
 }

src/events.rs

@@ -361,7 +361,7 @@ mod tests {
         ModuleMetadata,
         RuntimeMetadata,
         RuntimeMetadataPrefixed,
-        RuntimeMetadataV12,
+        RuntimeMetadataV13,
         META_RESERVED,
     };
     use std::convert::TryFrom;
@@ -399,7 +399,7 @@ mod tests {
         let decoder = EventsDecoder::<TestRuntime>::new(
             Metadata::try_from(RuntimeMetadataPrefixed(
                 META_RESERVED,
-                RuntimeMetadata::V12(RuntimeMetadataV12 {
+                RuntimeMetadata::V13(RuntimeMetadataV13 {
                     modules: DecodeDifferent::Decoded(vec![ModuleMetadata {
                         name: DecodeDifferent::Decoded("System".to_string()),
                         storage: None,

src/metadata.rs

@@ -529,7 +529,7 @@ impl TryFrom<RuntimeMetadataPrefixed> for Metadata {
             return Err(ConversionError::InvalidPrefix.into())
         }
         let meta = match metadata.1 {
-            RuntimeMetadata::V12(meta) => meta,
+            RuntimeMetadata::V13(meta) => meta,
             _ => return Err(ConversionError::InvalidVersion.into()),
         };
         let mut modules = HashMap::new();