Japanese support

[AmichayMiara]

We are using amazon-mws 0.0.26 package (Latest).
Yes, It working with the Amazon Scratchpad (see screenshots).

Amazon MWS Marketplace related to the issue is Japan (A1VC38T7YXB528).
We are using the Reports API with the orders report GET_FLAT_FILE_ALL_ORDERS_DATA_BY_ORDER_DATE

As we see, Japanese is not supported using the package.
We have some columns that include Japanese words and in the scratchpad we get them well, but not using amazon-mws,
see example:
for order 503-3718261-3217429:
product-name should be: Jordan 歯ブラシ STEP1(ステップ1) 0-2才用【8本セット】子供こども赤ちゃんやわらかめ
product-name received: 'Jordan ���u���V STEP1(�X�e�b�v1) 0-2�˗p�y8�{�Z�b�g�z�q�����ǂ��Ԃ������炩��'

Please add support for Japanese,
Please let me know if you need any thing else.