Bugfix: attribute types do not intersect with any of the other node kinds (led to illegal removal of typeswitch branches if attributes were involved).
Bugfix: attribute types do not intersect with any of the other
node kinds (led to illegal removal of typeswitch branches if
attributes were involved).

zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb