The jgd package bundles the cJSON library in src/cjson/ for JSON
serialisation. cJSON is copyright (c) 2009-2017 Dave Gamble and
cJSON contributors, distributed under the MIT license. The full
upstream notice is preserved in the header of src/cjson/cJSON.c and
src/cjson/cJSON.h. Upstream source: https://github.com/DaveGamble/cJSON