I would like the possibility to escape separators if they exist in the 'value': 	

I would like the possibility to escape separators if they exist in the 'value':  
Examples:       

``` java
map = (Map<String, String>) parser.parseType("hello1=1\\,23,hello2=321", type);
List<String> list = parser.parse("a\\,b,c", new GenericType<List<String>>() {});
```
