* feat: fee estimation with custom/default fn
* fix: clippy and percentage calc fix
* calculate priority fee only if base fee above threshold
* chore: some comments
* fix: use legacy tx for ganache
* test: test a few cases for fee estimation using utils
* fix: re-enable ethgasstation tests and add new fields on response
* fix: re-enable etherchain tests and add new fields on response
* feat: add new etherscan response fields
* feat: use gasnow v3
* chore: derive more traits for response types