Upgrade JSON for Modern C++

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Upgrade JSON for Modern C++ to 3.1.2
https://raw.githubusercontent.com/nlohmann/json/v3.1.2/single_include/nlohmann/json.hpp
This commit is contained in:
Steve Bennett 2018-05-19 12:59:03 -07:00 committed by Steve Bennett
parent 45aa95093c
commit b9eeca218d
2 changed files with 10534 additions and 7748 deletions

18276
externals/json/json.hpp vendored

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