(Bumps version to 3.8 because admins should update the plugin list.)
Deduplication didn't work on quantified additions, i.e. if you added
"20x clubmate" when there was already clubmate in the cart, it would add
just ONE item, and have a lingering message that the next thing would be
multiplied by 20.
This old bug was especially annoying if there is a barcode "20x
clubmate" to scan 20 bottles (which is the size of a crate), and this is
repeated.
The fix also uncovered another bug: newly added entries were selected
too early. There are two hooks, hook_add_entry and hook_added_entry, and
of course the selection should happen in between, not before the former.
No entry in UPGRADING.md, because I think it is extremely unlikely that
any plugin author will have used the selection feature yet, which is
very new.
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