`db.transact` returns a promise. It 'resolves' when the transaction is guaranteed by the server, or if you are offline, if it's been enqueued. I'll note to incl

`db.transact` returns a promise. It 'resolves' when the transaction is guaranteed by the server, or if you are offline, if it's been enqueued. I'll note to include some information about this in the docs, thank you.