add timestamp to history command output, convert value to float

lib/commands.py

@@ -456,10 +456,15 @@ class Commands:
                 time_str = datetime.datetime.fromtimestamp(timestamp).isoformat(' ')[:-3]
             except Exception:
                 time_str = "----"
-
             label, is_default_label = self.wallet.get_label(tx_hash)
-
+            out.append({
-            out.append({'txid':tx_hash, 'date':"%16s"%time_str, 'label':label, 'value':format_satoshis(value), 'confirmations':conf})
+                'txid':tx_hash,
+                'timestamp':timestamp,
+                'date':"%16s"%time_str,
+                'label':label,
+                'value':float(format_satoshis(value)) if value is not None else None,
+                'confirmations':conf}
+            )
         return out
 
     @command('w')