Moved compression/decompression routines to separate file

Samo Penic

2019-10-19 dba66b4f8a25cb7eb18de5f7ffca97e179d7a5d9

 src/energy.c

@@ -238,3 +238,7 @@
   return vesicle->tape->F*ddp;      
   
}

void stretchenergy(ts_vesicle *vesicle, ts_triangle *triangle){
   triangle->energy=vesicle->tape->xkA0/2.0*pow((triangle->area/vesicle->tlist->a0-1.0),2);
}