Tests and changelog

test/libsolidity/ASTJSON/documentation_local_variable.sol

@@ -0,0 +1,25 @@
+contract C {
+    function f() public pure {
+        /// Documentation for x; will appear in ast json
+        uint x = 1;
+        for (
+            /// documentation for i; will not appear in ast json
+            uint i = 0;
+            i < 10;
+            ++i
+        ) {
+            /// documentation for j; will appear in ast json
+            uint j = 0;
+        }
+    }
+    function g(
+        /// documentation for param1; will not appear in ast json
+        uint param1,
+        /// documentation for param2; will not appear in ast json
+        uint param2,
+        /// documentation for param3; will not appear in ast json
+        uint param3
+    ) public {}
+}
+
+// ----