- Parameters "lang" and "version" added to the root "KAF" element.

- SpanStrings added so a string is printed for each Term/Chunk/Dep and for each span in an Entity/Coref. Example:

  <terms>
    <!--New-->
    <term tid="tid1" type="" lemma="" pos="NNP">
      <span>
        <target id="wid1" />
      </span>
    </term>
    <!--York-->
    <term tid="tid2" type="" lemma="" pos="NNP">
      <span>
        <target id="wid2" />
      </span>
    </term>
    ...
  </terms>