Address data

[estarriolvetch]

This extension follows the AddressData format of ERC721A, soit can be a dropped-in replacement for the contract that requires AddressData.

In addition, use this extension if tracking on-chain balance is important for your application.

Feel free to send PR to help me complete these TODOs!

• [x] Upgradeable version
• [ ] Test the interactions with burnable

[estarriolvetch]

@madeinfree I am thinking of replacing the trackBalance extension with this.

I'd like to hear your thought! BTW nice article on FB

[madeinfree]

@estarriolvetch Cool, this is interesting implementation, I will try to read this and comment feedback or questions here ~

Thank you, and I believe more people should know ERC721Psi will either help for the gas war or cost down !