"deflate-raw" option

[ylxdzsw]

Thanks for the good project! I find that it does not expose the "deflate-raw" format in the current polyfiller even though the related functionality has already been implemented. I can get it work simply by modify the code and change the argument passed to the constructor of the Inflater and Deflater classes.

As "deflate-raw" has been accepted as a part of the standard, will this project adds support for it?