Gas Optimization: Reorder storage layout

[code423n4]

Handle

gzeon

Vulnerability details

Impact

Can save gas by packing variable into less storage slots, for example:

--- a/contracts/contracts/Auction.sol
+++ b/contracts/contracts/Auction.sol
@@ -13,13 +13,14 @@ contract Auction is IAuction, ReentrancyGuard {
     uint256 private constant BASE = 1e18;
     uint256 private constant ONE_DAY = 1 days;

-    bool public override auctionOngoing;
     uint256 public override auctionStart;
-    bool public override hasBonded;
     uint256 public override bondAmount;
     uint256 public override bondTimestamp;
     uint256 public override bondBlock;

+    bool public override auctionOngoing;
+    bool public override hasBonded;
+
     IBasket public override basket;
     IFactory public override factory;
     address public override auctionBonder;

--- a/contracts/contracts/Basket.sol
+++ b/contracts/contracts/Basket.sol
@@ -21,14 +21,16 @@ contract Basket is IBasket, ERC20Upgradeable, ReentrancyGuard {

     uint256 public maxSupply;

-    address public publisher;
     uint256 public licenseFee;

+    uint256 public override ibRatio;
+    
+    uint256 public override lastFee;
+
+    address public publisher;
     IFactory public override factory;
     IAuction public override auction;

-    uint256 public override ibRatio;
-
     PendingPublisher public pendingPublisher;
     PendingLicenseFee public pendingLicenseFee;
     PendingWeights public pendingWeights;

Note that this probably isn't the most efficient ordering, for best result variables that will be used together should be put into the same slot if possible.