[enh] #94 check-format and format tests and examples folders

Makefile

examples/create_and_publish_identity.py

examples/create_public_key.py

examples/load_binary_encrypted_message.py

examples/load_binary_signed_message.py

examples/load_cleartext_ascii_armor_message.py

examples/load_encrypted_ascii_armor_message.py

examples/request_data.py

examples/request_data_elasticsearch.py

examples/save_and_load_private_key_file_ewif.py

examples/save_and_load_private_key_file_pubsec.py

examples/save_and_load_private_key_file_wif.py

examples/save_binary_encrypted_message.py

examples/save_binary_signed_message.py

examples/save_cleartext_ascii_armor_message.py

examples/save_encrypted_ascii_armor_message.py

examples/save_revoke_document.py

examples/send_certification.py

examples/send_membership.py

examples/send_transaction.py