This is a copy of the "official" version of Astrolog 7.80 (released June 20, 2025) described at: http://www.astrolog.org/astrolog.htm
The files here were copied from: http://www.astrolog.org/ftp/ast78src.zip
The changes in version 7.80 are described at: http://www.astrolog.org/ftp/updat780.htm
This fork adds a cross-platform FLTK GUI with a CMake build system. For build instructions, see GUI.md.