Convenience wrapper that uses the rmarkdown
   package to render small snippets of code to target formats that
   include both code and output.  The goal is to encourage the sharing of
   small, reproducible, and runnable examples on code-oriented websites,
   such as <https://stackoverflow.com> and <https://github.com>, or in
   email. The users clipboard is the default source of input code and
   the default target for rendered output. reprex' also extracts clean,
   runnable R code from various common formats, such as copy/paste from
   an R session.