New user features:
The display can now be zoomed and panned.
Deep sky objects may be displayed.
A deeper star catalog is available as
an option.
The separate toggle buttond for the
Celestial Equator, the Ecliptic and
the Galactic Plane have been rolled into
one toggle called "Great Circles", to
save menu space.
Bug Fixes:
An error that prevented some 4th magnitude
stars from being plotted (they were
plotted in black!) has been fixed.
A bug which caused some stars near the
celestial equator to be plotted at the
wrong position (by ~1 degree) has been
fixed.