problem of mismatching number of frames in render_gif</li>
<li>Slice center navigation now has positions</li>
<li>Fixed bug in slice tour when anchor was not provided</li>
<li>Added slice center guide</li>
<li>Adding manual slicing</li>
<li>Error fixed in is_orthonormalise(), which is to check whether a vector is normalised</li>
<li>Error fixed in orthonormalise_by(), which needed to run over columns of new matrix, too</li>
</ul></div>
    <div class="section level2">
<h2 class="page-header" data-toc-text="