This directory contains external projects, taken from the following locations:
scrypt: http://www.tarsnap.com/scrypt.html
googletest: https://github.com/google/googletest
spdlog: https://github.com/gabime/spdlog/commit/0c7beb2e36008598cf80d0e8eb8635ac403febb9
- with own fix: https://github.com/cryfs/spdlog/commit/7b8d507615b8075fc6c8793a0965a32a708288c4
gitversion: https://github.com/smessmer/gitversion