Merge #356: Support multiple warnings in RPC responses

e03cd64 Support multiple warnings in RPC responses (Roman Zeyde)

Pull request description:

  Following #353.

  Tested on latest bitcoind (bitcoin/bitcoin@2cedb42) with latest electrs (romanz/electrs@7773c26).

ACKs for top commit:
  apoelstra:
    ACK e03cd64 neat! that was easy

Tree-SHA512: df9c038f8e1ccac54a07ad13c7ed87f3a92909c20128fcb598b9891d59127a289bbaf79f9a505d9c87347ffd79dc2aaa063ad750126dbd95a916541d032f4106

json/src/lib.rs

@@ -118,7 +118,7 @@ pub struct GetNetworkInfoResult {
     pub incremental_fee: Amount,
     #[serde(rename = "localaddresses")]
     pub local_addresses: Vec<GetNetworkInfoResultAddress>,
-    pub warnings: String,
+    pub warnings: StringOrStringArray,
 }
 
 #[derive(Clone, PartialEq, Eq, Debug, Deserialize, Serialize)]
@@ -517,7 +517,7 @@ pub struct GetMiningInfoResult {
     pub pooled_tx: usize,
     #[serde(deserialize_with = "deserialize_bip70_network")]
     pub chain: Network,
-    pub warnings: String,
+    pub warnings: StringOrStringArray,
 }
 
 #[derive(Clone, PartialEq, Eq, Debug, Deserialize, Serialize)]
@@ -1005,7 +1005,7 @@ pub struct GetAddressInfoResult {
 }
 
 /// Used to represent values that can either be a string or a string array.
-#[derive(Clone, Debug, Deserialize, Serialize)]
+#[derive(Clone, Debug, Deserialize, PartialEq, Eq, Serialize)]
 #[serde(untagged)]
 pub enum StringOrStringArray {
 	String(String),