Sort object keys by name

[mitar]

JSON schema can have keys in arbitrary order for object type, but for reading I think t would be much more readable if they would be sorted by name.

[mohsen1]

This is out of scope of this package. If you like sorted keys you should do it before passing it to your renderer

Also see mohsen1/json-formatter#30

[mitar]

Hm, but JavaScript objects do not have order of keys defined by standard (they are in many implementations, notably Chrome). So you cannot presort them.