fix test

appveyor.yml

beembase/memo.py

tests/beemgraphene/test_account.py

tests/test_account.py

tests/test_aes.py

tests/test_amount.py

tests/test_asset.py

tests/test_comment.py

tests/test_market.py

tests/test_memo.py

tests/test_objectcache.py

tests/test_price.py

tests/test_steem.py

tests/test_transactions.py