e1b5664f21
Aside from including a ton of bug fixes, this should fix an issue in the CI pipeline when building with system libraries that was caused by a minor incompatibility between 0.5.0 and less ancient versions. Also, switch to the amalgamated source, because it makes it easier to keep it up to date. https://github.com/open-source-parsers/jsoncpp/wiki/Amalgamated-(Possibly-outdated)