[mod] #186: Apply pyupgrade

duniterpy/api/bma/tx.py

duniterpy/api/client.py

duniterpy/api/endpoint.py

duniterpy/api/errors.py

duniterpy/documents/block.py

duniterpy/documents/block_id.py

duniterpy/documents/certification.py

duniterpy/documents/document.py

duniterpy/documents/identity.py

duniterpy/documents/membership.py

duniterpy/documents/peer.py

duniterpy/documents/revocation.py

duniterpy/documents/transaction.py

duniterpy/documents/ws2p/heads.py

duniterpy/grammars/output.py

duniterpy/key/ascii_armor.py

duniterpy/key/crc_pubkey.py

duniterpy/key/signing_key.py

examples/listen_ws2p.py

examples/load_cleartext_ascii_armor_message.py