indexing the param (#500)

Author: satyamakgec

contracts/modules/Checkpoint/ERC20DividendCheckpoint.sol

@@ -25,20 +25,20 @@ contract ERC20DividendCheckpoint is ERC20DividendCheckpointStorage, DividendChec
     );
     event ERC20DividendClaimed(
         address indexed _payee,
-        uint256 _dividendIndex,
+        uint256 indexed _dividendIndex,
         address indexed _token,
         uint256 _amount,
         uint256 _withheld
     );
     event ERC20DividendReclaimed(
         address indexed _claimer,
-        uint256 _dividendIndex,
+        uint256 indexed _dividendIndex,
         address indexed _token,
         uint256 _claimedAmount
     );
     event ERC20DividendWithholdingWithdrawn(
         address indexed _claimer,
-        uint256 _dividendIndex,
+        uint256 indexed _dividendIndex,
         address indexed _token,
         uint256 _withheldAmount
     );

contracts/modules/Checkpoint/EtherDividendCheckpoint.sol

@@ -17,13 +17,13 @@ contract EtherDividendCheckpoint is DividendCheckpoint {
         uint256 _expiry,
         uint256 _amount,
         uint256 _totalSupply,
-        uint256 _dividendIndex,
+        uint256 indexed _dividendIndex,
         bytes32 indexed _name
     );
-    event EtherDividendClaimed(address indexed _payee, uint256 _dividendIndex, uint256 _amount, uint256 _withheld);
-    event EtherDividendReclaimed(address indexed _claimer, uint256 _dividendIndex, uint256 _claimedAmount);
-    event EtherDividendClaimFailed(address indexed _payee, uint256 _dividendIndex, uint256 _amount, uint256 _withheld);
-    event EtherDividendWithholdingWithdrawn(address indexed _claimer, uint256 _dividendIndex, uint256 _withheldAmount);
+    event EtherDividendClaimed(address indexed _payee, uint256 indexed _dividendIndex, uint256 _amount, uint256 _withheld);
+    event EtherDividendReclaimed(address indexed _claimer, uint256 indexed _dividendIndex, uint256 _claimedAmount);
+    event EtherDividendClaimFailed(address indexed _payee, uint256 indexed _dividendIndex, uint256 _amount, uint256 _withheld);
+    event EtherDividendWithholdingWithdrawn(address indexed _claimer, uint256 indexed _dividendIndex, uint256 _withheldAmount);
 
     /**
      * @notice Constructor

contracts/modules/TransferManager/GeneralTransferManager.sol

@@ -32,9 +32,9 @@ contract GeneralTransferManager is GeneralTransferManagerStorage, ITransferManag
     // if allowAllWhitelistTransfers is TRUE, then _toTime and _fromTime is ignored when sending or receiving tokens
     // in any case, any investor sending or receiving tokens, must have a _expiryTime in the future
     event ModifyWhitelist(
-        address _investor,
+        address indexed _investor,
         uint256 _dateAdded,
-        address _addedBy,
+        address indexed _addedBy,
         uint256 _fromTime,
         uint256 _toTime,
         uint256 _expiryTime,