[Biosig-general] biosig4c++/libbiosig v1.4.0 released

[Alois S. <alo...@is...>]

The new release contains a number of significant improvements.
o) JSON output of header information,
    libbiosig contains two json_print functions
    save2gdf -JSON returns the header in JSON format
    and interface to Ruby reading the header information.

o) re-entrancy and thread-safety implemented
   removed or replaced all non re-entrant code. This concerned
   error handling, global eventcode description, and PhysDim.
   This makes libbiosig suitable for multithreading (openmp, pthread)
   applications.

o) error handling made re-entrant
   use serror2(hdr) instead of serror()
   serror() and global variables are kept for backwards compatibility
   but its usage is deprecated.

o) Support for CFS format significantly improved
   - markers (matrix data) supported
   - support for interleaved data is done right


The changes are significant, and justifying a short release cycle (1 
month) and a jump in the version number.


Alois