Improve NFC history readers and prepare production build

Emoney Info/Classes/api/utils/ByteArrayAndHexHelper.swift

@@ -25,8 +25,8 @@ public class ByteArrayAndHexHelper {
     public static func hex(from string: String) -> Data {
       .init(stride(from: 0, to: string.count, by: 2).map {
         string[string.index(string.startIndex, offsetBy: $0) ... string.index(string.startIndex, offsetBy: $0 + 1)]
-      }.map {
-        UInt8($0, radix: 16)!
+      }.compactMap {
+        UInt8($0, radix: 16)
       })
     }