Mention the license, avoid asserting copyright.
Don't emit nodes for street labels. Whitespace.
Limit useless precision, merge nodes within 1cm.
Improve address matching params slightly.
Improve joining nodes to lines logic, refactor.
For outlines merge attributes of all segments,
Skip big polygons with no attribute nodes.

These usually correspond to empty areas limited by buildings from all
sides, which we only detect because we have to automatically build
outlines from segments.
Basic ARC and CIRCLE support.