PO035 is enforcing {SyncIntervalInSecond, SyncMessageCount} as mutually exclusive

[DinoChiesa]

The documentation for AsynchonousConfiguration states that people can use EITHER the SyncIntervalInSeconds or the SyncMessageCount. And that they are mutually exclusive. The doc does not state what happens if a configuration uses both.

link

But I think this may be incorrect. I think it is valid to use both elements. And when you do, it means:
"Sync every N messages, or... M seconds, whichever comes first."

If this is so, then the PO035 plugin needs to tolerate both elements.

[DinoChiesa]

This is fixed by #445