- Add `compute_gas_fees()`: utility function to compute gas fees
- Add `build_transaction()` method: It's now possible to build the full transaction i/o just the input data.
- Add `fetch_permit2_allowance()`: Easy way to check the current Permit2 allowed amount, expiration and nonce.
- Make verifying contract (Permit2) configurable (Thanks to speedssr and freereaper)
- Replace deprecated `eth_account.encode_structured_data()` with `eth_account.messages.encode_typed_data()`