ERC-4393 Micropayments for NFTs and Multi Tokens

🆔 ERC-165 interface ids

Computed here as the XOR of the selectors each interface defines.

ITipToken 0xe47a7022

⚠️ The spec asserts 0x985a3267 for ITipToken, which its own interface does not produce.

The spec's own normative prose states 0xe47a7022, which agrees with the parser. The divergent value is a stray note inside an event's NatSpec.

`0x12c81d4f`	`balanceDepositOf(address)`	view
`0x70a08231`	`balanceOf(address)`	view
`0x47e7ef24`	`deposit(address,uint256)`	payable
`0x12425d4e`	`isApprovalForNFT(address,address,uint256)`
`0x65fd0794`	`rewardPendingOf(address)`	view
`0xbe3f51bb`	`setApprovalForNFT(address[],address,uint256,bool)`
`0xb7577fbe`	`tip(address,uint256,uint256)`
`0xed184baf`	`tipBatch(address[],address[],uint256[],uint256[])`
`0x523a3f08`	`withdrawReward(uint256)`	payable