• Improved -smooth corner detection.
• Added the -smooth corner-bias= option, for adjusting the senstitivity of corner detection.
• Fixed several -smooth bugs.
• Recalibrated -smooth so the default effect is ~5x stronger: the distance now roughly corresponds to the maximum displacement of the smoothed line from the original at sharp bends.
• Added an undocumented -smooth strength= option: a multiplier on the smoothing kernel relative to the distance (default 1).