Ethereum Etl Versions Save

Includes https://github.com/blockchain-etl/ethereum-etl/pull/371

• Upgraded web3.py to web3>=5.29,<6 https://github.com/blockchain-etl/ethereum-etl/pull/339
• Dropped support for python 3.6, 3.7.0 and 3.7.1

• Bumped Click to 8.0.4

• Adds contract and token support for PostgreSQL when streaming https://github.com/blockchain-etl/ethereum-etl/pull/293

• Move kafka-python dependency to streaming
• Lock libcst dependency version
• Loosen python-dateutil dependency version

• Add POA (Proof of Authority) support

• Add Kafka support to stream command

• Add GCS item exporter
• Add batch parameters to PubSubItemExporter
• Allow multiple outputs in --output param of stream command
• Bump version of pubsub library
• Allow message ordering for PubSubItemExporter if topic has sorted or ordered in its name
• Update docs

Fix https://github.com/blockchain-etl/ethereum-etl/issues/264

• Add EIP-1559 fields
  • base_fee_per_gas in blocks
  • max_fee_per_gas, max_priority_fee_per_gas, transaction_type in transactions
  • effective_gas_price in receipts
• Add --values-as-strings option to the extract_tokens and extract_token_transfers commands
• Fix receipt_effective_gas_price in the stream command