39 audit controllersol needs to implement tvl cant be zero (#64)

* audit: remove approving of WETH when Depositing Eth

* audit: Vault.sol mapping to epochs is over

* natspec example

* synthax errors on compile

* useless onlyAdmin

* audit: Controller.sol needs to implement TVL cant be zero

* total supply and modifier

* allow rest only after epoch begins

src/Controller.sol

@@ -281,7 +281,6 @@ contract Controller {
         view
         returns (int256 nowPrice)
     {
-        uint observationFrequency = 1 hours;
         (
             ,
             /*uint80 roundId*/
@@ -311,7 +310,7 @@ contract Controller {
             uint80 roundID,
             int256 price,
             ,
-            uint256 timeStamp,
+            ,
             uint80 answeredInRound
         ) = priceFeed.latestRoundData();
 
@@ -330,9 +329,6 @@ contract Controller {
         if(answeredInRound < roundID)
             revert RoundIDOutdated();
 
-        if(timeStamp < block.timestamp - uint256(observationFrequency))
-            revert TimestampOutdated();
-
         return price;
     }