issue #56 WIP - New Client class + refactor architecture (break BC)

duniterpy/api/bma/__init__.py

duniterpy/api/bma/blockchain.py

duniterpy/api/bma/network.py

duniterpy/api/bma/node.py

duniterpy/api/bma/tx.py

duniterpy/api/bma/ud.py

duniterpy/api/bma/wot.py

duniterpy/api/bma/ws.py

duniterpy/api/client.py

duniterpy/api/constants.py

duniterpy/api/elasticsearch/__init__.py

duniterpy/api/endpoint.py

duniterpy/api/ws2p/__init__.py

duniterpy/api/ws2p/network.py

duniterpy/documents/__init__.py

duniterpy/documents/peer.py

examples/create_and_publish_identity.py

examples/request_data.py

examples/save_revoke_document.py

examples/send_certification.py