Selecting first/last of *available* dates on given day.
Precaching on time select.
Reconfiguring time control on date change.
Comparing based on local dates.
Not resetting parent div on clear, as this causes tiles to not be visible when changing temporal extent.
Setting opacity on animated layer now works.
Pausing animation while precaching, so that the label doesn't flick between 'Loading' and the date/time.