There's now a hole in the items table: there's no item 667. There are
two records for the Live Caster in B/W, and I couldn't figure out why,
or see any difference between them, and they were causing problems, so
I deleted the second one.
Items with the same name are considered the same. So, for example,
Storage Key is all one item, even though there are multiple storage keys
named "Storage Key" across the generations. As far as I know, this only
ever affects miscellaneous keys.
The Itemfinder is considered the same item as the Dowsing MCHN. They
have the same Japanese name and do the same thing; as far as I'm
concerned, the name change is just another data change.
I wrote effects for the newly-added items very quickly. They aren't
very good. I'm leaving it up to whoever takes care of issue #247 to
write good ones.