Chore: Use 0 instead of uint256.max as flag to signal minting new nft. Add totalSupply to CoverNFT #655
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Context
Closes #619
Changes proposed in this pull request
This PR replaces the flag to mint a new NFT from
uint256.max
to 0 forCoverNFT
andStakingNFT
contracts.TokenId
0
no longer exists, except as a reference for the staking pool managerAdded
totalSupply( )
to CoverNFTAlso allocationID now also uses 0 to signal a new ID
Test plan
A test was added to make sure totalSupply() is working for Cover/Staking NFTs
Checklist
Review
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