Potential issue: If any ownership change transaction (like transfer) is seen on bubblegum txs before the mint

[linuskendall]

If the indexer sees a TX that modifies the owner and sequence number (e.g. transfer event) before it has seen the mint event, there is a potential for the mint event to never be able to be indexed or for the owner to be updated incorrectly in the asset table.

To address this we'll need to either sequence owner/delegate fields in the assets table or we'll need to have some other handling for this scenario.

[danenbm]

Starting to work on this now, adding sequence numbers for owner and delegate fields