ATS2-0.3.9

## ats2-postiats-0.3.9:

    This is the 46th release of ATS2, the successor of the
    ATS programming language. The compiler for ATS2 is given
    the name ATS/Positats, ATS2/Postiats or simply Postiats.

    The official website for ATS is:

    http://www.ats-lang.org

    ATS-Postiats is hosted at github:

    https://github.com/githwxi/ATS-Postiats

    Major releases of ATS2 are available at:

    https://sourceforge.net/projects/ats2-lang/

    Major releases of external packages for ATS2 are available at:

    https://sourceforge.net/projects/ats2-lang-contrib/

    Here is a list of major additions and changes since the last release:

    1. Improving libatscc/libatscc2js regarding matrixref and matrix0
    2. Improving doc/BOOK/ATS2FUNCRASH by tidying-up and fixing errors
    3. Adding some examples in ATS-Tutoriats demonstrating ATS+ReactJS
       and ATS+React-Native
    4. Adding basic programming support for parallelized stream-mapfold:
       ${PATSHOME}/libats/BUCS320/StreamPar (stream-processing)
       ${PATSHOME}/libats/BUCS520/StreamPar (linear-stream-processing)
    5. Adding basic programming support for recursive directory-traversal:
       ${PATSHOME}/npm-utils/contrib/libats-hwxi/find_cli
    6. Moving most higher-order functions from ATSPRE to ATSLIB/ML/atspre.
       This is a pervasive change, triggering a lot of (minor) fixes!
    7. Rewriting several stream_vt functions to make them tail-recursive.
    8. Moving ATSPRE/fcontainer and ATSPRE/giterator into libats/ATS2
    9. Finishing EFFECTIVATS/SteamPar on streamization and stream-processing
       in parallel.
    10. Starting the ATS-CodeBook project (at http://github.com/ats-lang):
        Hello, HX-intinf, ReadFromSTDIN, ReadFromSTDIN2, ReadFromSTDIN3, and
        WordFrqncyCount