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+Spdlog is a fast logging library. It is made for C++ and consists only of headers. Spdlog is used in FCNCfitter now, as the previous version only used two levels of verbosity (verbose and super verbose) using basic prints.
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+The github repository can be found at 
+[https://github.com/gabime/spdlog/wiki/1.-QuickStart](https://github.com/gabime/spdlog/wiki/1.-QuickStart)
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+For simple instalation guide and tutorials, see
+[https://spdlog.docsforge.com/master/](https://spdlog.docsforge.com/master/)
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