Generate a tombstone for old key when row's primary key is changed

rhauch, I believe Debezium generates rows with the primary key of the SourceRecord being the primary key of the row of data, right?

How do you handle the situation of when a row has its primary key changes? See https://github.com/confluentinc/bottledwater-pg/issues/12#issuecomment-106969307 for more details on the scenario.