 class="identifier">disjoint</span></code> for degenerate segments (patched
          by Karsten Ahnert)
        </li>
<li class="listitem">
          problem in <code class="computeroutput"><span class="identifier">geometry</span><span class="special">::</span><span class="identifier">difference</span></code> for missing handling tangency,
          reported by H2
        </li>
<li class="listitem">
          fixed <code class="computeroutput"><span class="identifier">geometry</span><span class="special">: