> date -> timestamp[tz]: I'm suspicious of this one, but it's hard to
> explain. The definition to fill in the time component with zeros is
> reasonable, but it's not the same thing as casting integers to floats
> because dates really represent a time span of 24 hours and timestamps an
> indivisible point in time. I suggest making this non-implicit, for
> conformance with SQL and for general consistency between the date/time
> types.
Althought I'm sure there's _loads_ of people using this conversion,
including me in various random places in the codebase.
Chris
