Added new Titan texture and clouds

Updated
Updated

ChangeLog

@@ -757,3 +757,8 @@ Code:
 * Changed default start location to Earth
 * Revised some erroneous spectral classes in star catalog
 * Made solar system objects occlude labels of more distant objects
+* Implemented an algorithm for importance weights to avoid overlapping or
+  too crowded location labels for Mars, Venus and the Moon
+* Added new textures for Titan based on recent imaging from the Cassini
+  mission 
+	

README

@@ -355,6 +355,12 @@ Saturn's rings were built by Grant Hutchison from Cassini imaging, with
 transparency information derived from stellar transit data obtained from:
   http://pds-rings.arc.nasa.gov/ringocc/ringocc.html
 
+Titan's cloud texture in natural colors and its surface map at
+near-infrared wavelength were created by Fridger Schrempp. They are
+based on resources available from the imaging site (Ciclops) of the
+Cassini mission,  
+  http://ciclops.lpl.arizona.edu/index.php
+
 Venus's surface is a copyright-free NASA image.
 
 The Earth texture was created by NASA using data from the MODIS instrument