AstroImageJ 3.0.0

This is the full 3.0.0 release of AstroImageJ. You can easily upgrade to a newer release using Help>Update AstroImageJ command. The ImageJ website is at rsb.info.nih.gov/ij/ and the OS X installation notes are at rsb.info.nih.gov/ij/docs/install/osx.html. This release includes both 32-bit ("AstroImageJ") and 64-bit ("AstroImageJ64") applications. "AstroImageJ64" requires a 64-bit Intel processor running OS X 10.5 or later.