Update changelog: 0.4.1

CHANGELOG.md

@@ -1,5 +1,11 @@
 # Changelog
 
+0.4.1 / 2017-11-19
+==================
+
+  * Bug fix to allow `constant` keyword for variables by only removing visibility modifiers from
+    functions. Uses the preprocessor walking over the AST rather than a regex
+
 0.4.0 / 2017-11-08 (Compatible with testrpc >= 6.0 / pragma 0.4.18 and above)
 ==================
 

README.md

@@ -21,14 +21,14 @@ $ npm install --save-dev solidity-coverage         // Post-Byzantium fork, testr
 $ npm install --save-dev solidity-coverage@0.2.5   // Pre-Byzantium fork, testrpc ~ 4.0.0
 ```
 
-**Important:** `v0.4.0` targets `solidity >= pragma 0.4.18` and introduces a breaking 
-change for projects that rely on Truffle's simplified contract method interface. All uses of `constant` 
+**Important:** `v0.4.0` targets `solidity >= pragma 0.4.18` and introduces a breaking
+change for projects that rely on Truffle's simplified contract method interface. All `constant`
 `view` or `pure` methods now need to be explicitly invoked using `.call`. e.g:
 ```
 myMethod.getViewValue(param)        // Old way
 myMethod.getViewValue.call(param)   // New way
 ```
-Methods invoked the old way will return a transaction object instead of a value when run under coverage. 
+Methods invoked the old way will return a transaction object instead of a value when run under coverage.
 See [issue #146](https://github.com/sc-forks/solidity-coverage/issues/146#issuecomment-342781441) for a more
 detailed explanation. `0.3.5` is an intermediate release that contains the Byzantium
 fork upgrade but does not require other code changes as long as your pragma is `<= 0.4.17`.