chore(doc): add changelog entry and add error classes to the readme

Author: Ruben Bridgewater

README.md

@@ -35,6 +35,11 @@ var myParser = new Parser(options);
 * `setReturnBuffers(boolean)`: (JSParser only) set the returnBuffers option on/off without resetting the parser
 * `setStringNumbers(boolean)`: (JSParser only) set the stringNumbers option on/off without resetting the parser
 
+### Error classes
+
+All errors returned by the parser are of the class `ReplyError` that is a sub class of `RedisError`.  
+Both types are exported by the parser.
+
 ### Example
 
 ```js

changelog.md

@@ -5,6 +5,7 @@ Features
 -  Added `reset` function to reset the parser to it's initial values
 -  Added `setReturnBuffers` function to reset the returnBuffers option (Only for the JSParser)
 -  Added `setStringNumbers` function to reset the stringNumbers option (Only for the JSParser)
+-  All Errors are now of sub classes of the new `RedisError` class. It is also exported.
 
 Bugfixes