following and unfollowing

Signed-off-by: William Casarin <jb55@jb55.com>

damus/Nostr/NostrEvent.swift

@@ -227,6 +227,11 @@ func decode_nostr_event(txt: String) -> NostrResponse? {
     return decode_data(Data(txt.utf8))
 }
 
+func encode_json<T: Encodable>(_ val: T) -> String? {
+    let encoder = JSONEncoder()
+    return (try? encoder.encode(val)).map { String(decoding: $0, as: UTF8.self) }
+}
+
 func decode_data<T: Decodable>(_ data: Data) -> T? {
     let decoder = JSONDecoder()
     do {

damus/Nostr/Relay.swift

@@ -7,7 +7,7 @@
 
 import Foundation
 
-struct RelayInfo {
+struct RelayInfo: Codable {
     let read: Bool
     let write: Bool