Move new subtypes to after count and name them

src/task.c

@@ -55,7 +55,8 @@ const char *taskID_names[task_type_count] = {
     "sourceterms"};
 
 const char *subtaskID_names[task_subtype_count] = {
-    "none", "density", "gradient", "force", "grav", "external_grav", "tend"};
+    "none", "density", "gradient", "force", "grav", "external_grav", "tend",
+    "xv", "rho"};
 
 /**
  * @brief Computes the overlap between the parts array of two given cells.

src/task.h

@@ -71,9 +71,9 @@ enum task_subtypes {
   task_subtype_grav,
   task_subtype_external_grav,
   task_subtype_tend,
-  task_subtype_count,
   task_subtype_xv,
-  task_subtype_rho
+  task_subtype_rho,
+  task_subtype_count
 } __attribute__((packed));
 
 /**