Web3-ethereum-defi

- Fix: Duplicate events appearing when using the concurrent event reader
- Added `ReorganisationMonitor` and `ChainReorganisationDetected` to deal with unstable chain tips when
doing event ignestion
- Added `uniswap-v2-pairs-swap-live.py` example that shows real-time
swaps happening on QuickSwap (Polygon) in a terminal
- Add `has_graphql_support()` to detect GraphQL interface on GoEthereum
- Add `GraphQLReorganisationMonitor` for very fast downloading
of block headers and timestamps using GoEthereum /graphql API

- Added `generate_fake_uniswap_v2_data()` to generate synthetic Uniswap v2 trade feeds
- Improved `PairDetails` API, added `get_current_mid_price()`
- Add `PairDetails.checksum_free_address` to shortcut getting lowercased Ethereum address
- Added `convert_jsonrpc_value_to_int()` to deal differences between real JSON-RPC and EthereumTester
- Add `install_chain_middleware()` and `install_retry_middleware()`
- Add `measure_block_time()`
- Add multiple contract address filtering to the event reader
- Add `fetch_deployment` for Uniswap v3
- Add `swap_with_slippage_protection` for Uniswap v3

- Add new PriceOracle types for unit testing

- Adding Trader Joe compatibility. Unlike other clones, Trader Joe uses `Router.WAVAX` instead `Roueter.WETH`
for the native token variable.
- Document BNB Chain "Limits exceeded" error - BNB Chain eth_getLogs have been
disabled on public endpoints

- Moving `nbsphinx` to optional dependency, was as core dependency by accident

- Feature: generic price oracle implementation with configurable price function
- Feature: time weighted average price (TWAP) price function for price oracle
- Feature: price oracle implementation for Uniswap v2 and v3 pools
- Feature: `update_live_price_feed` for real-time Uniswap v2 and v3 price oracles
- Feature: `fetch_pair_details` to get info on Uniswap v2 pairs
- API change: Refactored event filter implementation to `eth_defi.reader.filter`