Stream automatically on user defined threshold

[boenrobot]

As discussed in this topic at the MikroTik forum, right now, streaming of response values is "all or nothing", but there's no reason it can't be done when a word length is above a certain user defined threshold (off by default, of course).

This will require some significant refactoring on lower levels, but it will certainly pay off as a much more elegant way of dealing with potentially large responses.