Defaults are not handled in multirow inserts

[stachlewski]

execute_defaults assumes the query.parameters can't be a list, which is the case in a multirow insert like: q = table.insert().values([ {'val': 12}, {'val': 13}, ]) conn.execute(q)

[nhumrich]

could you throw together a PR and test case that fixes this?

[stachlewski]

I have a quick fix here: https://github.com/okcode-eu/asyncpgsa I will try to find some time to add a test.