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Update the compression level and strategy.
void params( z_params& zs, int level, Strategy strategy, error_code& ec);
          This function dynamically updates the compression level and compression
          strategy. The interpretation of level and strategy is as in zlib::deflate_stream::reset. This can be used to switch
          between compression and straight copy of the input data, or to switch to
          a different kind of input data requiring a different strategy. If the compression
          level is changed, the input available so far is compressed with the old
          level (and may be flushed); the new level will take effect only at the
          next call of zlib::deflate_stream::write. Before the call of params, the stream state must be set
          as for a call of zlib::deflate_stream::write, since the currently available
          input may have to be compressed and flushed. In particular, zs.avail_out
          must be non-zero.
        
          Z_OK if success, Z_STREAM_ERROR if the source stream state
          was inconsistent or if a parameter was invalid, error::need_buffers
          if zs.avail_out was zero.