h2><p class="text-muted">CRAN release: 2020-07-14</p>
<div class="section level3">
<h3 id="data-sets-0-12-0">Data sets<a class="anchor" aria-label="anchor" href="#data-sets-0-12-0"></a></h3>
<p>Both installed data sets, <code>vaccinations</code> and <code>majors</code>, are better documented.</p>
<p>The <code>a</code> field of <code>vaccinations</code> (the within-survey fraction of respondents, which can be computed from the other fields) has been removed, and the <code>start_date</code> and <code>end_date