Support for House-Numbers

The current SVN-version and the upcomming 0.9.7 have support for searching for house-numbers.
This may sound easy but given the number of different address-styles on this planet
even how they are to be added to the OpenStreetMap
we are operating on has been a topic for debates
for years.
We support individually mapped housenumbers and housenames on nodes and buildings described by polygons
as well as numerical (but not yet alphabetical) interpolation (all, even and odd).