filter out boundary relations wihout boundary tag
fixed inserted way marking regression

patch for skip_inserted_ways option disabled the mark_inserted_ways handling
improve imported_ways handling

do not rely on similar tags when deciding if a way was represented
by the inserted relation. compare actual mappings and skip ways
with same mapping as the relation.
use direct attribute access for skip_inserted_ways
compare with key/values when handling inserted_ways
only skip import of polygons if way was inserted as multipolygon
only merge rings with at least 2 nodes/refs
handle __any__ mappings even if there is a match for a key/val