• The -buffer topological option now partitions overlapping buffer space by proximity to the source polygons (the nearest polygon wins), instead of assigning each overlap to the largest-area polygon.
• The new -buffer fill-gaps mode fills gaps that are narrower than the given distance parameter, including both interior holes and gaps along the outside of a polygon mosaic (such as coastal inlets and rivers).
• Added the -buffer fill-gaps max-widening= option (see docs).