Potrace Files

August 18, 2003: Release 1.1

 The most important new feature of this release is an SVG (scalable
 vector graphics) backend. This file format can be read by vector
 graphics manipulation programs such as sodipodi, as well as web
 browsers with an SVG plugin. I also added PGM, PPM, and BMP as
 additional input file formats. The new --blacklevel and --invert
 options control how non-black-and-white images are converted to
 bitmaps before being processed by Potrace. The implementation of a
 critical function has been improved to make Potrace even faster on
 large input files; this results in speedups of up to factor 3.3
 relative to Potrace 1.0. Autoconfiguration was improved, and the code
 was polished to compile on more different architectures. The error
 messages for wrong file formats were also improved.