set fields public

Signed-off-by: charles2023wood <[email protected]>

contracts/BitcoinAgent.sol

@@ -27,11 +27,11 @@ contract BitcoinAgent is IAgent, System, IParamSubscriber {
 
   // Key: candidate
   // value: btc amount;
-  mapping (address => StakeAmount) candidateMap;
+  mapping (address => StakeAmount) public candidateMap;
 
   // key: bitcoin tx id
   // value: bitcoin receipt.
-  mapping(bytes32 => BtcReceipt) btcReceiptMap;
+  mapping(bytes32 => BtcReceipt) public btcReceiptMap;
 
   // minimum acceptable value for a BTC staking transaction
   uint64 public minBtcValue;
@@ -40,9 +40,9 @@ contract BitcoinAgent is IAgent, System, IParamSubscriber {
   uint32 public btcConfirmBlock;
 
   // key: delegator, value: fee
-  mapping(address => uint256) liabilities;
+  mapping(address => uint256) public liabilities;
   // key: relayer, value: fee
-  mapping(address => uint256) creditors;
+  mapping(address => uint256) public creditors;
 
   struct BtcReceipt {
     uint32 version;

contracts/PledgeAgent.sol

@@ -12,15 +12,12 @@ import "./lib/Memory.sol";
 import "./lib/SatoshiPlusHelper.sol";
 import "./System.sol";
 
-/// This contract manages user delegate, also known as stake
-/// Including both coin delegate and hash delegate
-
+/// This contract manages user delegate CORE.
 /// HARDFORK V-1.0.3
 /// `effective transfer` is introduced in this hardfork to keep the rewards for users 
 /// when transferring CORE tokens from one validator to another
 /// `effective transfer` only contains the amount of CORE tokens transferred 
 /// which are eligible for claiming rewards in the acting round
-
 contract PledgeAgent is IAgent, System, IParamSubscriber {
   using BitcoinHelper for *;
   using TypedMemView for *;