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 (commit 0c7beb2e36008598cf80d0e8eb8635ac403febb9)