More transaction added

steempy/notify.py

steempy/steem.py

steempy/storage.py

steempybase/objects.py

steempybase/operations.py

tests/test_account.py

tests/test_amount.py

tests/test_asset.py

tests/test_base_objects.py

tests/test_message.py

tests/test_objectcache.py

tests/test_price.py

tests/test_proposals.py

tests/test_steem.py

tests/test_steem_testnet.py

tests/test_transactions.py

tests/test_wallet.py