Support for multibyte characters in `ParserError` exception messages

[terandard]

Since v2.7.3, the size of ParserError exception messages is limited to 32 bytes.

• Limit the size of ParserError exception messages #625

When using multibyte characters, the characters might be cut off in the middle of a byte.

> JSON.parse("あああああああああああああああああああああああ")
JSON::ParserError: unexpected character: 'ああああああああああ�'

This could potentially cause additional unexpected errors.

Would it be possible to change the limit from byte size to character count?

[byroot]

That's a good point.

[terandard]

Thanks for the quick response!
I'm looking forward to the release!