Added constant volume plugin (partially)

Samo Penic

2019-03-08 77a2c7de0dd6563a30467fa2e73f02ec9f4c3deb

 src/tsmeasure.c

@@ -84,7 +84,6 @@
         tape_free(vesicle->tape);
         vesicle_free(vesicle);
               }
      free(ent);  
      }
   for (n = 0; n < count; n++)
     {