         geometries
        </li>
<li class="listitem">
          Added implementation for difference(pointlike, linear)
        </li>
<li class="listitem">
          New algorithm is_empty, returning true if the geometry represents the empty
          set
        </li>
<li class="listitem">
          The envelope algorithm supports pointlike and linear geometries in the
          spherical equatorial coordinate system
        </li>
<li class="listitem">
          The envelope algorithm supports pointlike g