A tiny bit of simplification, README edits, and site update

CHANGELOG.md

@@ -88,7 +88,9 @@ Changes for the next feature release, expected around 1 February 2025.
 
 ### Changed
 
- - #96: Changed `object` structure to include `novas_orbital` for `NOVAS_ORBITAL_OBJECT` types.
+ - #96: Changed `object` structure to include `novas_orbital` for `NOVAS_ORBITAL_OBJECT` types. To keep ABI 
+   compatibility to earlier SuperNOVAS releases, `make_object()` will not initialize the new `.orbit` field _unless_
+   `type` is set to `NOVAS_ORBITAL_OBJECT` (which was not available before).
 
  - #97: Updated `NOVAS_PLANETS`, `NOVAS_PLANET_NAMES_INIT`, and `NOVAS_RMASS_INIT` macros to include the added planet 
    constants.

README.md

@@ -1133,7 +1133,7 @@ code:
   // Optionally you may use a separate ephemeris dataset for major planets
   // (or if planet ephemeris was included in 'eph' above, you don't have to) 
   t_calcephbin *pleph = calceph_open(...);
-  int status = novas_use_calceph(pleph);
+  int status = novas_use_calceph_planets(pleph);
   if(status < 0) {
     // Ooops something went wrong...
   }

src/novas.c

@@ -6755,8 +6755,8 @@ short make_object(enum novas_object_type type, long number, const char *name, co
   if(!source)
     return novas_error(-1, EINVAL, fn, "NULL input source");
 
-  // FIXME for version v2.x initialize the entire structure again...
-  memset(source, 0, offsetof(object, orbit));
+  // FIXME will not need special case in v2.x
+  memset(source, 0, type == NOVAS_ORBITAL_OBJECT ? sizeof(object) : offsetof(object, orbit));
 
   // Set the object type.
   if(type < 0 || type >= NOVAS_OBJECT_TYPES)
@@ -6769,10 +6769,6 @@ short make_object(enum novas_object_type type, long number, const char *name, co
     if(number < 0 || number >= NOVAS_PLANETS)
       return novas_error(2, EINVAL, fn, "planet number %ld is out of bounds [0:%d]", number, NOVAS_PLANETS - 1);
 
-  // FIXME will not need special case in v2.x
-  if(type == NOVAS_ORBITAL_OBJECT)
-    memset(&source->orbit, 0, sizeof(source->orbit));
-
   source->number = number;
 
   if(name) {