better errors

commands/numedit/currency.js

@@ -53,7 +53,7 @@ module.exports = class CurrencyCommand extends Command {
             const rate = body.rates[to];
             return msg.say(`${amount} ${base} is ${amount * rate} ${to}.`);
         } catch (err) {
-            return msg.say(err.message);
+            return msg.say(`${err.name}: ${err.message}`);
         }
     }
 };