 via SIGINT or SIGTERM
        </li>
<li class="listitem">
          Some basic_fields operations now give the strong exception guarantee
        </li>
</ul></div>
<p>
      <span class="bold"><strong>Fixes</strong></span>
    </p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
          Fix "warning: &#8216;const&#8217; type qualifier on return type has no effect"
        </li>
<li class="listitem">
          ( <a href="https://github.com/boostorg/