title: where is ess version 19.04?
body: <p><a href="https://emacs.stackexchange.com/questions/17063/how-to-setup-knitr-workflow-in-emacs">https://emacs.stackexchange.com/questions/17063/how-to-setup-knitr-workflow-in-emacs</a> recommends 
  version 19.04 as the setup for Knitr is much simplified. However I can't find version 19.04</p>
  
  <p><a href="http://ess.r-project.org/" rel="nofollow noreferrer">http://ess.r-project.org/</a> has version 18.10.2 and links to a development version, 18.10.3snapshot, on github. It describes version 19.04 as "unreleased." </p>