At the moment, they return 0000-00-00 00:00:00 as per core, or a weirder date (such as date('c', 0))
Partially revert "Give `null` as date for draft posts"
This reverts commit 2bde2c2. This is
going to be fixed in #229 instead.
Don't skip draft test
We've now corrected the date issue in #229. Wa-hoo!