* Add --drop-polygons to drop a fraction of polygons by zoom level * Only complain once about failing to clean polygons
1.9.8
* Use an on-disk radix sort for the index to control virtual memory thrashing when the geometry and index are too large to fit in memory
1.9.7
* Fix build problem (wrong spelling of long long max/min constants)
1.9.6
* Add an option to give specific layer names to specific input files
1.9.5
* Remove temporary files that were accidentally left behind * Be more careful about checking memory allocations and array bounds * Add GNU-style long options