Implement BMA data validation

_ucoinpy_test/api/bma/__init__.py

_ucoinpy_test/api/bma/test_blockchain.py

_ucoinpy_test/api/bma/test_network.py

_ucoinpy_test/api/bma/test_tx.py

_ucoinpy_test/api/bma/test_wot.py

_ucoinpy_test/documents/test_block.py

_ucoinpy_test/documents/test_certification.py

_ucoinpy_test/documents/test_membership.py

_ucoinpy_test/documents/test_peer.py

_ucoinpy_test/documents/test_status.py

_ucoinpy_test/documents/test_transaction.py

requirements.txt

ucoinpy/api/bma/__init__.py

ucoinpy/api/bma/blockchain/__init__.py

ucoinpy/api/bma/network/__init__.py

ucoinpy/api/bma/network/peering/__init__.py

ucoinpy/api/bma/node/__init__.py

ucoinpy/api/bma/tx/__init__.py

ucoinpy/api/bma/tx/history/__init__.py

ucoinpy/api/bma/wot/__init__.py