jheyens

Since this is a breaking change, I want this to be merged in the upcoming version 2.0. Version 2 will add breaking changes by modifying the block module API to...

I had to look at flate2 to understand what you were asking. Am I correct that you would like the api to be restructured like [this](https://github.com/alexcrichton/flate2-rs/tree/master/src/deflate), having `read`, `write`, `bufread`...