val unzip : ?format:[ `gzip | `raw ] ->
       ?zlib_buffer_size:int ->
       unit ->
       (string, (string, [> Biocaml_zip.Error.unzip ]) Core.Result.t)
       Biocaml_transform.t
Create a transform that uncompresses a stream.
      The default format is `raw (i.e. only apply the "deflate"
      algorithm to the stream); `gzip means that the transform must first
      skip a gzip header.
 
val zip : ?format:[ `gzip | `raw ] ->
       ?level:int ->
       ?zlib_buffer_size:int -> unit -> (string, string) Biocaml_transform.t
Create a transform that writes compressed data.