upgrade tornado version
upgrade tornado version

RCOSDP/waterbutler,chrisseto/waterbutler,icereval/waterbutler,cosenal/waterbutler,felliott/waterbutler,CenterForOpenScience/waterbutler,rdhyee/waterbutler,Johnetordoff/waterbutler,kwierman/waterbutler,rafaeldelucena/waterbutler,TomBaxter/waterbutler