v0.3.1

Fix

• fix(bug): added support for checkMetadataHash SignedExtension (#421)(2d84bfd)
• fix: Update paysWithFeeOrigin examples and errors (#420)(8d13795)
• fix: improve error messages (#416)(f42ae74)

Chore

• chore(registry): update registry dep (#423)(7a58ae7)
• chore(deps): bumped PJS/API to 12.1.1 (#422)(6a5e0d2)

Docs

• docs: add multiasset and AH reserve examples (#418)(1e6e060)