Update contract

contracts/v0.2/src/SubmissionProxy.sol

@@ -37,8 +37,8 @@ contract SubmissionProxy is Ownable {
 
     mapping(address => OracleInfo) public whitelist;
     mapping(bytes32 feedHash => IFeed feed) public feeds;
-    mapping(bytes32 feedHash => uint8 threshold) thresholds;
-    mapping(bytes32 feedHash => uint256 lastSubmissionTime) lastSubmissionTimes;
+    mapping(bytes32 feedHash => uint8 threshold) public thresholds;
+    mapping(bytes32 feedHash => uint256 lastSubmissionTime) public lastSubmissionTimes;
 
     event OracleAdded(address oracle, uint256 expirationTime);
     event OracleRemoved(address oracle);
@@ -61,7 +61,8 @@ contract SubmissionProxy is Ownable {
     error InvalidSignatureLength();
     error InvalidFeed();
     error ZeroAddressGiven();
-    error AnswerTooOld();
+    error AnswerOutdated();
+    error AnswerSuperseded();
     error InvalidProofFormat();
     error InvalidProof();
     error FeedHashNotFound();
@@ -416,8 +417,12 @@ contract SubmissionProxy is Ownable {
     }
 
     function submitSingle(bytes32 _feedHash, int256 _answer, uint256 _timestamp, bytes calldata _proof) public {
-        if (_timestamp <= (block.timestamp - dataFreshness) * 1000 || lastSubmissionTimes[_feedHash] >= _timestamp) {
-            revert AnswerTooOld();
+        if (_timestamp <= (block.timestamp - dataFreshness) * 1000 ) {
+            revert AnswerOutdated();
+        }
+
+        if (lastSubmissionTimes[_feedHash] >= _timestamp) {
+            revert AnswerSuperseded();
         }
 
         (bytes[] memory proofs_, bool success_) = splitProofs(_proof);