- Change functions naming to more intuitive: 'getGasPrice' returns gas price in hexed number, 'getGasPriceParams' now returns legacy or EIP-1559 gas parameters
- The library has become more versatile for working with third-party libraries (without BigNumber from 'ethers' library in return values, only hexed string-numbers)
- Simplify functions for refund calculations, no need to provide transaction type, because we need to calculate refund only on user side
- Add interface for TokenPriceOracle and change typings
