libwy-0.69.4 is released

With the support of Packet Based Protocol in this version, I think the function
of c++std library is no way to catch up (it relates to 'process', graphics and
file format, just function side). https://sourceforge.net/projects/cscall/

Take the 'graphics' for example, "Small is beauty":

------- manpage of namespace Face
Wy(3wy)                                                                 Wy(3wy)

NAME
       Face - namespace of utilities based on Packet-Based communication Proto‐
       col

SYNOPSIS
       Except  POD  types, C structures, particularly marked, all types are de‐
       clared in namespace Wy.

       #include <CSCall/Face.h>

       Namespace Face  provides  basic  utilities  for  the  implement  of  PBP
       (Packet-based  communication  Protocol), particularly for graphics capa‐
       bilities (but, it actually does more than graphics).  For full GUI,  ap‐
       plications  just  need  to  define  their  own  'GUI  language'  between
       processes.

       namespace Face {
        constexpr WeeStr RGB32("RGB32")
        typedef Vect<unsigned char,4> RGB32_Pixel
        constexpr RGB32_Pixel RGB32_White
        constexpr RGB32_Pixel RGB32_Blue
        constexpr RGB32_Pixel RGB32_Green
        constexpr RGB32_Pixel RGB32_Red
        constexpr RGB32_Pixel RGB32_Black

        constexpr unsigned int LeftButton
        constexpr unsigned int MiddleButton
        constexpr unsigned int RightButton

        constexpr size_t HeadPktSize=16
        char* write_headpkt(char*, size_t)
        const char* getsize_from_headpkt(const char*, size_t&)

        String mkpkt_RS(size_t, int, int, WeeStr)
        String mkpkt_MO(size_t, WeeStr, int, int, unsigned int)

        class Receiver (ref. Face.Receiver(3wy))

        Errno put_image(ByteFlow&, const Hdr2D<const RGB32_Pixel>&)
        Errno put_image(ByteFlow&, const RGB32_Pixel*, unsigned  int,  unsigned
       int) };

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