v1.0.0 release

• adds new API methods to web3.flashbots:
  • get_bundle_stats
  • get_user_stats
  • send_private_transaction
  • cancel_private_transaction
• fixes goerli middleware bug
• FlashbotsTransactionResponse becomes FlashbotsBundleResponse, and FlashbotsPrivateTransactionResponse is added
  • sign_bundle and send_bundle are affected
• adds EIP-1559 compatibility
• corrects typos & formatting errors
• upgrades dependencies
• adds missing type hints