Docs, changelog and tests

test/compilationTests/MultiSigWallet/MultiSigWalletWithDailyLimit.sol

@@ -69,8 +69,8 @@ contract MultiSigWalletWithDailyLimit is MultiSigWallet {
         internal
         returns (bool)
     {
-        if (now > lastDay + 24 hours) {
-            lastDay = now;
+        if (block.timestamp > lastDay + 24 hours) {
+            lastDay = block.timestamp;
             spentToday = 0;
         }
         if (spentToday + amount > dailyLimit || spentToday + amount < spentToday)
@@ -88,7 +88,7 @@ contract MultiSigWalletWithDailyLimit is MultiSigWallet {
         view
         returns (uint)
     {
-        if (now > lastDay + 24 hours)
+        if (block.timestamp > lastDay + 24 hours)
             return dailyLimit;
         if (dailyLimit < spentToday)
             return 0;

test/libsolidity/syntaxTests/globalFunctions/now_deprecate.sol

@@ -0,0 +1,7 @@
+contract C {
+	function f() public {
+		now;
+	}
+}
+// ----
+// TypeError: (38-41): "now" has been deprecated. Use "block.timestamp" instead.

test/libsolidity/syntaxTests/globalFunctions/now_override.sol

@@ -0,0 +1,8 @@
+contract C {
+	function f() public view {
+		uint now = block.timestamp;
+		now;
+	}
+}
+// ----
+// Warning: (43-51): This declaration shadows a builtin symbol.

test/libsolidity/syntaxTests/viewPureChecker/smoke_test.sol

@@ -1,7 +1,7 @@
 contract C {
     uint x;
     function g() pure public {}
-    function f() view public returns (uint) { return now; }
+    function f() view public returns (uint) { return block.timestamp; }
     function h() public { x = 2; }
     function i() payable public { x = 2; }
 }