A JSON pretty-printing library compatible with aeson as well as a
command-line tool to improve readabilty of streams of JSON data.

The library provides the function "encodePretty". It is a drop-in
replacement for aeson's "encode" function, producing JSON-ByteStrings
for human readers.

The command-line tool reads JSON from stdin and writes prettified JSON
to stdout. It also offers a complementary "compact"-mode, essentially
the opposite of pretty-printing.