Why stderr instead of stdout

[piranha]

Hi James! I wonder what's the reason behind changing the default output to stderr. 😁 Because in result I now have to pepper alter-var-root like that in every project I touch to make hashp usable with CIDER. :-)

Maybe you have better ideas of how to make it less awkward, some CIDER config maybe?

EDIT: late thought: maybe the reason is not stderr vs stdout, but an early bind to *err* makes it output to something different rather than what CIDER provides as an *err*?