When a node has no coordinates, treat it as missing for the purpose of constructing the multilinestring, multipolygon, or way geometry, to avoid producing coordinates of [NaN, NaN].
When a piece of a multipolygon or multilinestring contains no coordinates, remove it, to avoid inserting an empty array into the coordinates array.
When a node has no coordinates, treat it as missing for the purpose of constructing the multilinestring, multipolygon, or way geometry, to avoid producing coordinates of [NaN, NaN].
When a piece of a multipolygon or multilinestring contains no coordinates, remove it, to avoid inserting an empty array into the coordinates array.
Fixes #142