0.1 
    - initial version
0.2 on 21.03.2007
    - added render()
    - added validate()
    - fixed some issues in number parsing
    - some more documentation
    - internal types for true, false and null
0.3 on 16.05.2007
    - parser wasnt strict enough
    - fixed some output formating
0.4 on 21.05.2007
    - changed the array and mapping parser from using
      the pike stack to collect values (stupid me)
0.5 on 2.12.2007
    - fixed a memory leak in the number parsing.
0.6 on 22.2.2008
    - uses swscanf for number parsing in case sizeof(p_wchar2) == sizeof(wchar_t)
      instead of copying in to a char* and parsing using sscanf.