v4.15.1

Upgrade priority: Medium. Recommended for all chains where Xcm is used (addition of new XcmOrigin)

Contributed:

• Added ChargeAssetTxPayment extension (Thanks to https://github.com/apopiak)

Changes:

• Allow for type decoding of nested fixed vectors, tuples and structs
• Added childstate_getKeysPaged RPC
• Add XcmOrigin mapping for OriginCaller generation
• Align static metadata with latest Substrate
• Adjust error message for contracts V3 (extrinsic from runtime)
• Correct module optionality in api.derive.balances.account
• Add alias for GenericAddress -> GenericMultiAddress
• Adjust metadata doc generation (keep spaces between subsequent lines)