Important Update:

- Improve "printing" for JSON with single & multi line objects
- Fix bugs in getting, setting & creating array elements
- "array[]" allowed to create/add element at end of an array
- No longer duplicate get() path (reduce memory allocation)
  - added NameLen to TMember to eliminate zero-terminate requirement
- Fix ReadfromXXX() return values

DataTreeCore.h

@@ -30,10 +30,12 @@ typedef struct SDataMember TDataMember;
 struct SDataMember
 {
     char            * Name;
+    unsigned short  NameLen;
     EDataType       Type;
+
     TDataMember     * FirstChild;
     char            * Value;
-    int             Len;
+    unsigned short  Len;
 
     TDataMember     * Next;
 };
@@ -65,6 +67,7 @@ public:
 
     EDataType     GetType(   TDataMember * BaseMember, const char * Path );
     TDataMember * GetMember( TDataMember * BaseMember, const char * Path, bool Create = false );
+    TDataMember * GetFirstChild( TDataMember * BaseMember, const char * Path, bool Create = false );
 
     const char *    GetStr(   TDataMember * BaseMember, const char * Path, const char * Default = NULL, bool Create = false );
     const char *    GetStr(   TDataMember * BaseMember, const char * Path, int &Len, const char * Default = NULL, bool Create = false );