castVote(proposalId, support): weight

$castVote(proposalId, support): weight$

• Reverts if proposal is not $Active$

• Reverts if voting $weight$ of $msg.sender$ is 0

• Reverts if $msg.sender$ already voted

• Gets votes from the previous epoch as $weight$ of $msg.sender$

• Accounts for $msg.sender$ $support$ vote

• Returns $weight$ of $msg.sender$.