[Tagging] Updating definition and description of place=square

[Greg Troxel]

Paul Allen <pla16021 at gmail.com> writes:

> I can think of one US city square which has "square" in the name
> (not square shaped, though) that is rather well-known.  If you
> can't think of it the ball will drop eventually, at midnight on Dec 31st.

But is that a place=square?  That is simply an intersection which is
called square.  There is no hard-surfaced area for people separate frrom
the roads.