message: Serde cleanup
diff: @@ -45,10 +45,9 @@ pub enum CosmosMsg {
  }
  #[derive(Serialize, Deserialize)]
  +#[serde(rename_all="lowercase")]
  pub enum ContractResult {
  - #[serde(rename = "msgs")]
  Msgs(Vec<CosmosMsg>),
  - #[serde(rename = "error")]
  Error(String),
  }
  