v0.2.0: handle multiple JSON structures

[ynqa]

What?

• Handle multiple JSON structures, such as jsonl

How to check

git clone https://github.com/ynqa/jnv.git
cd jnv
git checkout -b dev-0.2.0/jsonl origin/dev-0.2.0/jsonl
echo '{ "a": 123 }{ "b": 456 }' | cargo run

# Previously, running jnv on multiple JSONs like this was resulting in an error.
# echo '{ "a": 123 }{ "b": 456 }' | jnv
# Error: trailing characters at line 1 column 13

Resolves #14
Resolves #9

[corneliusroemer]

This is great! IIUC, you are simply treating each line separately and then concatenating the outputs.

I tested and it works.