- Switched to arbitrary-precision math to improve reliability of -clean, -dissolve2 and several other commands.
- Added keep-shapes option to -filter-slivers to retain one ring in multipart polygon features that would otherwise be removed completely.
- Removed the -q/--quick-view option from mapshaper-gui. Now, "quick view" (skipping the import prompt) is the default.
- Added -i/--import-prompt option to mapshaper-gui, to display the import prompt if desired.
- Now, SVG coordinate precision is settable using the -o precision= option (previously SVG precision was always two decimals).