enable root parameter

[shibacow]

I use jsonl-plugin.
embulk-parser-json have root parameter.
please add root parameter.
then could parse nested json.

[muga]

Sorry for late response. We released embulk-parser-jsonl v0.1.0. It supports nested json. Could you please try to use v0.1.0?

Or recently Embulk v0.8 supports Json type and v0.8.5 supports JsonParserPlugin as a built-in plugin. You also can use it.

If you have any questions, please let us know.