This release is a patch of 0.22.0 that brings in support for the newly added chains:
zora: 'eip155:7777777',
mode: 'eip155:34443',
rootstock: 'eip155:30',
'polygon-zkevm': 'eip155:1101',
'zksync-era': 'eip155:324',
Full Changelog: v0.22.0...v0.22.1