/*! \page qgis3_user_changes QGIS 3.0 User Changes

\tableofcontents

Notes regarding user related changes for QGIS 3.0 which should be included in the release notes.

\subsection qgis3_user_changes_expressions Expressions

QGIS 3.0 brings some changes to the expression engine, which may require existing projects to
be updated so that any expressions in use have the following changes:
<ul>
<li>$rownum has been replaced by @row_number</li>
<li>$scale has been replaced by @map_scale</li>
<li>$map has been replaced by @map_id</li>
<li>$numpages has been replaced by @layout_numpages</li>
<li>$page has been replaced by @layout_page</li>
<li>$feature has been replaced by @atlas_featurenumber</li>
<li>$atlasfeatureid has been replaced by @atlas_featureid</li>
<li>$atlasfeature has been replaced by @atlas_feature</li>
<li>$atlasgeometry has been replaced by @atlas_geometry</li>
<li>$numfeatures has been replaced by @atlas_totalfeatures</li>
</ul>

*/