Updated changelog and ran linter

contracts/staking/contracts/src/interfaces/IStakingEvents.sol

@@ -146,14 +146,4 @@ interface IStakingEvents {
         uint32 oldOperatorShare,
         uint32 newOperatorShare
     );
-
-    /// @dev Emitted when an operator reward is transferred to the Eth vault.
-    /// @param amount The amount in ETH withdrawn.
-    /// @param operator of the pool.
-    /// @param poolId The pool the reward was deposited for.
-    event OperatorRewardTransferredToEthVault(
-        bytes32 poolId,
-        address operator,
-        uint256 amount
-    );
 }

contracts/staking/contracts/src/interfaces/IStructs.sol

@@ -97,7 +97,7 @@ interface IStructs {
     }
 
     /// @dev Holds the metadata for a staking pool.
-    /// @param initialzed True iff the balance struct is initialized.
+    /// @param initialized True iff the balance struct is initialized.
     /// @param operator of the pool.
     /// @param operatorShare Fraction of the total balance owned by the operator, in ppm.
     /// @param numberOfMakers Number of makers in the pool.

contracts/staking/contracts/src/staking_pools/MixinStakingPool.sol

@@ -113,6 +113,8 @@ contract MixinStakingPool is
         return nextPoolId;
     }
 
+    /// @dev Returns a staking pool
+    /// @param poolId Unique id of pool.
     function getStakingPool(bytes32 poolId)
         public
         view
@@ -132,6 +134,8 @@ contract MixinStakingPool is
         return bytes32(uint256(poolId).safeAdd(POOL_ID_INCREMENT_AMOUNT));
     }
 
+    /// @dev Reverts iff a staking pool does not exist.
+    /// @param poolId Unique id of pool.
     function _assertStakingPoolExists(bytes32 poolId)
         internal
         view
@@ -148,6 +152,10 @@ contract MixinStakingPool is
         }
     }
 
+    /// @dev Reverts iff the new operator share is invalid.
+    /// @param poolId Unique id of pool.
+    /// @param currentOperatorShare Current operator share.
+    /// @param newOperatorShare New operator share.
     function _assertNewOperatorShare(
         bytes32 poolId,
         uint32 currentOperatorShare,

contracts/staking/contracts/src/staking_pools/MixinStakingPoolRewards.sol

@@ -32,6 +32,8 @@ contract MixinStakingPoolRewards is
 
     /// @dev Syncs rewards for a delegator. This includes transferring rewards from
     /// the Reward Vault to the Eth Vault, and adding/removing dependencies on cumulative rewards.
+    /// This is used by a delegator when they want to sync their rewards without delegating/undelegating.
+    /// It's effectively the same as delegating zero stake.
     /// @param poolId Unique id of pool.
     function syncDelegatorRewards(bytes32 poolId)
         external