API docs tweaks and site update

src/frames.c

@@ -587,7 +587,9 @@ int novas_geom_posvel(const object *source, const novas_frame *frame, enum novas
  * <li>If `sys` is `NOVAS_TOD` (true equator and equinox of date), the less precise old (pre IAU
  * 2006) method is used, with the Lieske et al. 1977 nutation model, matching the behavior of the
  * original NOVAS C place() for that system. To obtain more precise TOD coordinates, set `sys` to
- * `NOVAS_CIRS` here, and follow with cirs_to_tod() after.</li>
+ * `NOVAS_CIRS` here, and follow with cirs_to_tod() / cirs_to_app_ra() on the `out->r_hat` /
+ * `out->ra` respectively after (or you can use just convert one of the quantities, and use
+ * radec2vector() or vector2radec() to get the other even faster).</li>
  * </ol>
  *
  * @param object        Pointer to a celestial object data structure that is observed
@@ -604,6 +606,7 @@ int novas_geom_posvel(const object *source, const novas_frame *frame, enum novas
  * @sa novas_app_to_hor()
  * @sa place()
  * @sa cirs_to_tod()
+ * @sa cirs_to_app_ra()
  *
  * @since 1.1
  * @author Attila Kovacs