Address new compiler warnings

contracts/Bounty.sol

@@ -18,7 +18,7 @@ contract Bounty is PullPayment, Destructible {
   /**
    * @dev Fallback function allowing the contract to receive funds, if they haven't already been claimed.
    */
-  function() payable {
+  function() external payable {
     require(!claimed);
   }
 

contracts/DayLimit.sol

@@ -15,7 +15,7 @@ contract DayLimit {
    * @dev Constructor that sets the passed value as a dailyLimit.
    * @param _limit uint256 to represent the daily limit.
    */
-  function DayLimit(uint256 _limit) {
+  function DayLimit(uint256 _limit) public {
     dailyLimit = _limit;
     lastDay = today();
   }

contracts/LimitBalance.sol

@@ -15,7 +15,7 @@ contract LimitBalance {
    * @dev Constructor that sets the passed value as a limit.
    * @param _limit uint256 to represent the limit.
    */
-  function LimitBalance(uint256 _limit) {
+  function LimitBalance(uint256 _limit) public {
     limit = _limit;
   }
 

contracts/MerkleProof.sol

@@ -13,7 +13,7 @@ library MerkleProof {
    * @param _root Merkle root
    * @param _leaf Leaf of Merkle tree
    */
-  function verifyProof(bytes _proof, bytes32 _root, bytes32 _leaf) pure returns (bool) {
+  function verifyProof(bytes _proof, bytes32 _root, bytes32 _leaf) public pure returns (bool) {
     // Check if proof length is a multiple of 32
     if (_proof.length % 32 != 0) return false;
 

contracts/crowdsale/CappedCrowdsale.sol

@@ -12,7 +12,7 @@ contract CappedCrowdsale is Crowdsale {
 
   uint256 public cap;
 
-  function CappedCrowdsale(uint256 _cap) {
+  function CappedCrowdsale(uint256 _cap) public {
     require(_cap > 0);
     cap = _cap;
   }

contracts/crowdsale/Crowdsale.sol

@@ -40,7 +40,7 @@ contract Crowdsale {
   event TokenPurchase(address indexed purchaser, address indexed beneficiary, uint256 value, uint256 amount);
 
 
-  function Crowdsale(uint256 _startTime, uint256 _endTime, uint256 _rate, address _wallet) {
+  function Crowdsale(uint256 _startTime, uint256 _endTime, uint256 _rate, address _wallet) public {
     require(_startTime >= now);
     require(_endTime >= _startTime);
     require(_rate > 0);
@@ -61,7 +61,7 @@ contract Crowdsale {
 
 
   // fallback function can be used to buy tokens
-  function () payable {
+  function () external payable {
     buyTokens(msg.sender);
   }
 

contracts/crowdsale/RefundVault.sol

@@ -22,7 +22,7 @@ contract RefundVault is Ownable {
   event RefundsEnabled();
   event Refunded(address indexed beneficiary, uint256 weiAmount);
 
-  function RefundVault(address _wallet) {
+  function RefundVault(address _wallet) public {
     require(_wallet != address(0));
     wallet = _wallet;
     state = State.Active;

contracts/crowdsale/RefundableCrowdsale.sol

@@ -21,7 +21,7 @@ contract RefundableCrowdsale is FinalizableCrowdsale {
   // refund vault used to hold funds while crowdsale is running
   RefundVault public vault;
 
-  function RefundableCrowdsale(uint256 _goal) {
+  function RefundableCrowdsale(uint256 _goal) public {
     require(_goal > 0);
     vault = new RefundVault(wallet);
     goal = _goal;

contracts/examples/SampleCrowdsale.sol

@@ -30,7 +30,7 @@ contract SampleCrowdsaleToken is MintableToken {
  */
 contract SampleCrowdsale is CappedCrowdsale, RefundableCrowdsale {
 
-  function SampleCrowdsale(uint256 _startTime, uint256 _endTime, uint256 _rate, uint256 _goal, uint256 _cap, address _wallet)
+  function SampleCrowdsale(uint256 _startTime, uint256 _endTime, uint256 _rate, uint256 _goal, uint256 _cap, address _wallet) public
     CappedCrowdsale(_cap)
     FinalizableCrowdsale()
     RefundableCrowdsale(_goal)

contracts/examples/SimpleToken.sol

@@ -21,7 +21,7 @@ contract SimpleToken is StandardToken {
   /**
    * @dev Constructor that gives msg.sender all of existing tokens.
    */
-  function SimpleToken() {
+  function SimpleToken() public {
     totalSupply = INITIAL_SUPPLY;
     balances[msg.sender] = INITIAL_SUPPLY;
   }

contracts/lifecycle/Destructible.sol

@@ -10,7 +10,7 @@ import "../ownership/Ownable.sol";
  */
 contract Destructible is Ownable {
 
-  function Destructible() payable { }
+  function Destructible() public payable { }
 
   /**
    * @dev Transfers the current balance to the owner and terminates the contract.

contracts/lifecycle/TokenDestructible.sol

@@ -12,7 +12,7 @@ import "../token/ERC20Basic.sol";
  */
 contract TokenDestructible is Ownable {
 
-  function TokenDestructible() payable { }
+  function TokenDestructible() public payable { }
 
   /**
    * @notice Terminate contract and refund to owner

contracts/ownership/HasNoEther.sol

@@ -21,7 +21,7 @@ contract HasNoEther is Ownable {
   * constructor. By doing it this way we prevent a payable constructor from working. Alternatively
   * we could use assembly to access msg.value.
   */
-  function HasNoEther() payable {
+  function HasNoEther() public payable {
     require(msg.value == 0);
   }
 

contracts/ownership/HasNoTokens.sol

@@ -18,6 +18,9 @@ contract HasNoTokens is CanReclaimToken {
   * @param data_ Bytes The data passed from the caller.
   */
   function tokenFallback(address from_, uint256 value_, bytes data_) external {
+    from_;
+    value_;
+    data_;
     revert();
   }
 

contracts/ownership/Ownable.sol

@@ -17,7 +17,7 @@ contract Ownable {
    * @dev The Ownable constructor sets the original `owner` of the contract to the sender
    * account.
    */
-  function Ownable() {
+  function Ownable() public {
     owner = msg.sender;
   }
 

contracts/payment/SplitPayment.sol

@@ -20,7 +20,7 @@ contract SplitPayment {
   /**
    * @dev Constructor
    */
-  function SplitPayment(address[] _payees, uint256[] _shares) {
+  function SplitPayment(address[] _payees, uint256[] _shares) public {
     require(_payees.length == _shares.length);
 
     for (uint256 i = 0; i < _payees.length; i++) {

contracts/token/CappedToken.sol

@@ -11,7 +11,7 @@ contract CappedToken is MintableToken {
 
   uint256 public cap;
 
-  function CappedToken(uint256 _cap) {
+  function CappedToken(uint256 _cap) public {
     require(_cap > 0);
     cap = _cap;
   }

contracts/token/DetailedERC20.sol

@@ -7,7 +7,7 @@ contract DetailedERC20 is ERC20 {
   string public symbol;
   uint8 public decimals;
 
-  function DetailedERC20(string _name, string _symbol, uint8 _decimals) {
+  function DetailedERC20(string _name, string _symbol, uint8 _decimals) public {
     name = _name;
     symbol = _symbol;
     decimals = _decimals;

contracts/token/TokenTimelock.sol

@@ -21,7 +21,7 @@ contract TokenTimelock {
   // timestamp when token release is enabled
   uint64 public releaseTime;
 
-  function TokenTimelock(ERC20Basic _token, address _beneficiary, uint64 _releaseTime) {
+  function TokenTimelock(ERC20Basic _token, address _beneficiary, uint64 _releaseTime) public {
     require(_releaseTime > now);
     token = _token;
     beneficiary = _beneficiary;

contracts/token/TokenVesting.sol

@@ -39,7 +39,7 @@ contract TokenVesting is Ownable {
    * @param _duration duration in seconds of the period in which the tokens will vest
    * @param _revocable whether the vesting is revocable or not
    */
-  function TokenVesting(address _beneficiary, uint256 _start, uint256 _cliff, uint256 _duration, bool _revocable) {
+  function TokenVesting(address _beneficiary, uint256 _start, uint256 _cliff, uint256 _duration, bool _revocable) public {
     require(_beneficiary != address(0));
     require(_cliff <= _duration);
 

test/helpers/BasicTokenMock.sol

@@ -7,7 +7,7 @@ import '../../contracts/token/BasicToken.sol';
 // mock class using BasicToken
 contract BasicTokenMock is BasicToken {
 
-  function BasicTokenMock(address initialAccount, uint256 initialBalance) {
+  function BasicTokenMock(address initialAccount, uint256 initialBalance) public {
     balances[initialAccount] = initialBalance;
     totalSupply = initialBalance;
   }

test/helpers/BurnableTokenMock.sol

@@ -4,7 +4,7 @@ import '../../contracts/token/BurnableToken.sol';
 
 contract BurnableTokenMock is BurnableToken {
 
-  function BurnableTokenMock(address initialAccount, uint initialBalance) {
+  function BurnableTokenMock(address initialAccount, uint initialBalance) public {
     balances[initialAccount] = initialBalance;
     totalSupply = initialBalance;
   }

test/helpers/CappedCrowdsaleImpl.sol

@@ -12,7 +12,7 @@ contract CappedCrowdsaleImpl is CappedCrowdsale {
     uint256 _rate,
     address _wallet,
     uint256 _cap
-  )
+  ) public
     Crowdsale(_startTime, _endTime, _rate, _wallet)
     CappedCrowdsale(_cap)
   {

test/helpers/DayLimitMock.sol

@@ -4,7 +4,7 @@ import "../../contracts/DayLimit.sol";
 contract DayLimitMock is DayLimit {
   uint256 public totalSpending;
 
-  function DayLimitMock(uint256 _value) DayLimit(_value) {
+  function DayLimitMock(uint256 _value) public DayLimit(_value) {
     totalSpending = 0;
   }
 

test/helpers/DetailedERC20Mock.sol

@@ -4,5 +4,5 @@ import '../../contracts/token/StandardToken.sol';
 import '../../contracts/token/DetailedERC20.sol';
 
 contract DetailedERC20Mock is StandardToken, DetailedERC20 {
-  function DetailedERC20Mock(string _name, string _symbol, uint8 _decimals) DetailedERC20(_name, _symbol, _decimals) {}
+  function DetailedERC20Mock(string _name, string _symbol, uint8 _decimals) DetailedERC20(_name, _symbol, _decimals) public {}
 }

test/helpers/ERC23TokenMock.sol

@@ -10,13 +10,13 @@ contract ERC23ContractInterface {
 
 contract ERC23TokenMock is BasicToken {
 
-  function ERC23TokenMock(address initialAccount, uint256 initialBalance) {
+  function ERC23TokenMock(address initialAccount, uint256 initialBalance) public {
     balances[initialAccount] = initialBalance;
     totalSupply = initialBalance;
   }
 
   // ERC23 compatible transfer function (except the name)
-  function transferERC23(address _to, uint256 _value, bytes _data)
+  function transferERC23(address _to, uint256 _value, bytes _data) public
     returns (bool success)
   {
     transfer(_to, _value);

test/helpers/FinalizableCrowdsaleImpl.sol

@@ -11,7 +11,7 @@ contract FinalizableCrowdsaleImpl is FinalizableCrowdsale {
     uint256 _endTime,
     uint256 _rate,
     address _wallet
-  )
+  ) public
     Crowdsale(_startTime, _endTime, _rate, _wallet)
     FinalizableCrowdsale()
   {

test/helpers/ForceEther.sol

@@ -7,9 +7,9 @@ pragma solidity ^0.4.18;
 // @author Remco Bloemen <[email protected]>
 contract ForceEther  {
 
-  function ForceEther() payable { }
+  function ForceEther() public payable { }
 
-  function destroyAndSend(address _recipient) {
+  function destroyAndSend(address _recipient) public {
     selfdestruct(_recipient);
   }
 }

test/helpers/HasNoEtherTest.sol

@@ -5,7 +5,7 @@ import "../../contracts/ownership/HasNoEther.sol";
 contract HasNoEtherTest is HasNoEther {
 
   // Constructor with explicit payable — should still fail
-  function HasNoEtherTest() payable {
+  function HasNoEtherTest() public payable {
   }
 
 }

test/helpers/InsecureTargetBounty.sol

@@ -5,7 +5,7 @@ import {Bounty, Target} from "../../contracts/Bounty.sol";
 
 
 contract InsecureTargetMock is Target {
-  function checkInvariant() returns(bool){
+  function checkInvariant() public returns(bool){
     return false;
   }
 }

test/helpers/LimitBalanceMock.sol

@@ -7,7 +7,7 @@ import '../../contracts/LimitBalance.sol';
 // mock class using LimitBalance
 contract LimitBalanceMock is LimitBalance(1000) {
 
-  function limitedDeposit() payable limitedPayable {
+  function limitedDeposit() public payable limitedPayable {
   }
 
 }

test/helpers/PausableMock.sol

@@ -9,7 +9,7 @@ contract PausableMock is Pausable {
   bool public drasticMeasureTaken;
   uint256 public count;
 
-  function PausableMock() {
+  function PausableMock() public {
     drasticMeasureTaken = false;
     count = 0;
   }

test/helpers/PausableTokenMock.sol

@@ -5,7 +5,7 @@ import '../../contracts/token/PausableToken.sol';
 // mock class using PausableToken
 contract PausableTokenMock is PausableToken {
 
-  function PausableTokenMock(address initialAccount, uint initialBalance) {
+  function PausableTokenMock(address initialAccount, uint initialBalance) public {
     balances[initialAccount] = initialBalance;
   }
 

test/helpers/PullPaymentMock.sol

@@ -7,10 +7,10 @@ import '../../contracts/payment/PullPayment.sol';
 // mock class using PullPayment
 contract PullPaymentMock is PullPayment {
 
-  function PullPaymentMock() payable { }
+  function PullPaymentMock() public payable { }
 
   // test helper function to call asyncSend
-  function callSend(address dest, uint256 amount) {
+  function callSend(address dest, uint256 amount) public {
     asyncSend(dest, amount);
   }
 

test/helpers/ReentrancyAttack.sol

@@ -2,7 +2,7 @@ pragma solidity ^0.4.18;
 
 contract ReentrancyAttack {
 
-  function callSender(bytes4 data) {
+  function callSender(bytes4 data) public {
     require(msg.sender.call(data));
   }
 

test/helpers/ReentrancyMock.sol

@@ -7,7 +7,7 @@ contract ReentrancyMock is ReentrancyGuard {
 
   uint256 public counter;
 
-  function ReentrancyMock() {
+  function ReentrancyMock() public {
     counter = 0;
   }
 

test/helpers/RefundableCrowdsaleImpl.sol

@@ -12,7 +12,7 @@ contract RefundableCrowdsaleImpl is RefundableCrowdsale {
     uint256 _rate,
     address _wallet,
     uint256 _goal
-  )
+  ) public
     Crowdsale(_startTime, _endTime, _rate, _wallet)
     RefundableCrowdsale(_goal)
   {