[Tagging] year in opening_hours syntax

[Richard Welty]

i'm looking an application where having year in the opening_hours syntax 
would
be useful, not directly in opening hours but for a conditional access 
restriction.

the use case would be that known road closures could be placed in 
advance, and
routing/GPS software that could handle it would be able to generate 
alternate routes
depending on the time.

there is a genuine application for it in front of me right now; i'm 
working on a
project that includes GPS for emergency responders, and they would very 
much like
to have such a capability.

yes, it would lead to old closures scattered about the database, but 
there are ways
of dealing with that.

richard