* Changes to work on Linux.
* Multiple small fixes for Linux.
* Changes to have trails working on Linux again.
* Bring back AA Trail Lines on Linux.
* Included new branch with correction in cfitsio library linking.
* Updated SGCT.
* Changes to work on Linux.
* Remove extra #endif
* Changes to compile in Clang on Linux.
* Other fixes.
* Bring back some of the changes lost and updated clang building commands.
* requiring 10.15 for sgct, upadating sgct
Co-authored-by: Jonathas <jon.costa@gmail.com>
Co-authored-by: Tom Schober <tom@tomschober.com>
Co-authored-by: Alexander Bock <mail@alexanderbock.eu>
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