Turn GHC -pj profiling output into FlameGraph format.

Please see the README on Github at https://github.com/Fuuzetsu/ghc-prof-aeson-flamegraph#readme

ghc-prof-aeson-flamegraph

Turn GHC's JSON profiling output into FlameGraph compatible format.

This is similar to ghc-prof-flamegraph but only supports JSON format. If you want to process profiling output from regular -p, -P &c., please try using that instead.