[carbon] geonames: don't use "A" feature class
According to http://www.geonames.org/export/codes.html A isn't very informative for our use case.
This patch restricts the feature classes to geoencode travels to P and S.
According to http://www.geonames.org/export/codes.html A isn't very informative for our use case.
This patch restricts the feature classes to geoencode travels to P and S.