latest: Release 1.4.3. (#172)

* Fix scheduled nightly clippy. (#160)
* Always compile tests with the `mainnet` feature. (#162)
* Move eth-connector tests to under `src/tests`. (#164)
* EIP-2718: Support typed transaction envelopes. (#165)
* Remove deprecated EIP-712 prover implementation. (#168)
* ERC-20: Allow admin to change token metadata. (#171)

Co-authored-by: Evgeny Ukhanov <[email protected]>
Co-authored-by: Kirill <[email protected]>
Co-authored-by: Michael Birch <[email protected]>