title: reshape vs. reshape2 in R
body: <p>I am attempting to understand why development had shifted from <code>reshape</code> to <code>reshape2</code> package. They seem to be functionally the same, however, I am unable to upgrade to <code>reshape2</code> currently due to an older version of R running on the server.  I am concerned about the possibility of a major bug that would have shifted development to a whole new package instead of simply continuing development of <code>reshape</code>.  Does anyone know if there is a major flaw in the <code>reshape</code> package?</p>