new distributions, and improved
          the performance of the non-central distributions.
        </li>
<li class="listitem">
          Added SSE2 optimised <a class="link" href="lanczos.html" title="The Lanczos Approximation">Lanczos approximation</a>
          code, from Gautam Sewani's Google Summer of Code project.
        </li>
<li class="listitem">
          Fixed bug in cyl_bessel_i that used an incorrect approximation for ν = 0.5,
          also effects the non-central Chi Square Distribution whe