Block time stamp can be manipulated

[kyokosdream]

The block time stamp can be manipulated so this represents an opportunity for malicious miners to attack the contract.

Open to suggestions how to refactor the code.

[kyokosdream]

I don't think this is an issue because the block time stamp is used for:

• When minting or transferring tokens a function checks to see if the current proposal should be cleared, if (24 hours, 86400 seconds) has elapsed since the current proposal was activated (lastProposalStart)

• When calling proposeRelease() it checks to see whether a proposal has occurred in the last 7 days (604800 seconds) and reverts execution if one has occurred in that time interval

• When users vote it checks to make sure the 24 hour voting period has ended as a requirement for voting.

We need to double check to make sure the vote() function is re-entrant safe.

I believe it is since the ERC721A aux data is already set before incrementing the vote count.