Fix lint and add fallback fee to bitcoin.conf.

tests/basicswap/mnemonics.py

@@ -0,0 +1,12 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2020 tecnovert
+# Distributed under the MIT software license, see the accompanying
+# file LICENSE.txt or http://www.opensource.org/licenses/mit-license.php.
+
+mnemonics = [
+    'abandon baby cabbage dad eager fabric gadget habit ice kangaroo lab absorb',
+    'actuel comédie poésie noble facile éprouver brave cellule rotule académie hilarant chambre',
+    'ちしき　いてざ　きおち　あしあと　ぽちぶくろ　こえる　さつえい　むえき　あける　ほんき　むさぼる　ねいろ',
+]