title: dplyr::select function clashes with MASS::select
body: <p>If I load the <code>MASS</code> package:</p>
  
  <pre><code>library(MASS)
  </code></pre>
  
  <p>then load try to run <code>dplyr::select</code>, I get a error:</p>
  
  <pre><code>library(dplyr)
  mtcars %.%
  select(mpg)
  
  # Error in select(`__prev`, mpg) : unused argument (mpg)
  </code></pre>
  
  <p>How can I use <code>dplyr::select</code> with the <code>MASS</code> package loaded?</p>