Class Json::FastWriter: Use StreamWriterBuilder.
Class Json::Reader: Use CharReader and CharReaderBuilder.
Member Json::Reader::getFormatedErrorMessages () const: Use getFormattedErrorMessages() instead (typo fix).
Member Json::Reader::Reader (const Features &features): Use CharReader and CharReaderBuilder.
Member Json::Reader::Reader (): Use CharReader and CharReaderBuilder.
Class Json::StyledStreamWriter: Use StreamWriterBuilder.
Class Json::StyledWriter: Use StreamWriterBuilder.
Member Json::Value::setComment (const char *comment, CommentPlacement placement): Always pass len.
Member Json::ValueIteratorBase::memberName () const: This cannot be used for UTF-8 strings, since there can be embedded nulls.
Class Json::Writer: Use StreamWriter. (And really, this is an implementation detail.)