Galvan DAO

In the project design, the owner is able to set the issuer of the protocol, which can call `mint()` to mint an arbitrary amount of tokens without any restriction. Any compromise to the owner or the issuer account may allow a hacker to take advantage of this authority, mint tokens, and sell tokens for profit, thus causing unexpected losses to the users/project. Additionally, related functions are listed below: - `mint()`: Issuer can mint an arbitrary amount of tokens to any address; - `setIssuer()`: Owner can set the issuer role; - `transferOwnership()`: Owner can set a new pending owner candidate; - `confirmOwnership()`: New pending owner candidate can confirm and become the new owner.

The linked variables assigned in the constructor can be declared as `immutable`. Immutable state variables can be assigned during contract creation but will remain constant throughout the lifetime of a deployed contract. A big advantage of immutable variables is that reading them is significantly cheaper than reading from regular state variables since they will not be stored in storage.