combined statistics output to file

Samo Penic

2016-06-01 f3a6c1779ed6eea30da3c120c05153e9494f6715

 src/general.h

@@ -313,6 +313,7 @@
   ts_double R_nucleusX;
   ts_double R_nucleusY;
   ts_double R_nucleusZ;
   ts_double nucleus_center[3];
    ts_double area;
} ts_vesicle;