[Tagging] Change of rendering: place of worship and terminal without building tag

[Matthijs Melissen]

Dear all,

In the next version of the openstreetmap-carto style sheet (the
default rendering used on openstreetmap.org) there will be some
changes that might highlight current tagging errors.

In particular, areas tagged with amenity=place_of_worship or
aeroway=terminal that do not have a building tag will be no longer
rendered as a building.

It is therefore suggested to explicitly add a building=yes tag (or a
more specific building tag) to all buildings tagged with
amenity=place_of_worship or aeroway=terminal. Objects tagged as such
that are not buildings of course do not need to receive a building
tag.

-- Matthijs