Jean Boussier 1042a0bdd8 JSON::Coder callback now recieve a second argument to mark object keys
e.g.
```ruby
{ 1 => 2 }
```

The callback will be invoked for `1` as while it has a native JSON
equivalent, it's not legal as an object name.
2025-09-19 19:30:10 +09:00
..
2025-09-05 15:08:21 -07:00
2025-08-12 01:16:46 +00:00