Comparison wih ijson

This project is [newer](https://github.com/daggaz/json-stream/commit/79d1d0f4fb99227aa69536fe14dedbf7a07ce34d) than an existing and relatively popular JSON library, @ICRAR's [ijson](https://github.com/ICRAR/ijson). What was the motivation for creating this library, and how is it different from the prior art?