Less verbose pretty()

[lbilli]

Great addition the new pretty printing feature! 👍

Is is possible to mute the str = "..." messages?
It looks like they have mainly a debugging purpose.

julia> JSON3.pretty(JSON3.write([1,2]))
str = "[1,2]"
[
  str = "1"
1,
  str = "2"
2
]

[Jacob Quinn]

Oops! How embarrassing! Fixed in bda1550