v4.9 (the second release): added elevation range in sun/moon finder. added marker rating feature. added hints to rating and icon when editing marker. a few bug fixes for beta users to try out. fixed freeze issue in viewfinder, fixed crash when importing kml, added choice for light source for the light and shadow, fixed bulb timer not accurate, fixed constellation translation for Chinese

v4.9 added nebulae support

v4.8 added sequence feature, added planets and constellations display