Allow SetItem to non-string format?

Hi Sriraman,

Thank you for creating this module. I have a quick question, currently the allowed format for "Value" parameter is `String` only. I recommend adding multiple methods to support different type, such as `boolean` and `int` in Java. Maybe we can simply add some bridge functions like `setItemBoolean` or `setItemInt` to make it work?

Thanks,
-Ellis

