Release Notes for Version 1.89

The draw, fill, and clip commands now pass raw SVG code directly to dvisvgm
(version 0.8.6 required); zero-length paths are output as circles.
Unsupported SVG elements are converted to PNG images; unimplemented SVG
features such as Gouraud and tensor-patch shading can be (partially)
emulated as vector elements using the -svgemulation option.
The control point normalization of rational NURBS surfaces was fixed;
3D NURBS curves are now implemented. A problem with inlinemovie3 was fixed.
The linetype pattern is now a real array: for backwards compatibility, a
string is still accepted, but the return type of linetype(pen) is now
real[] instead of string (backwards incompatible). The split routine was
changed so that an empty delimiter splits on spaces, discarding duplicates.
The palette routines are now guaranteed to generate at least the
specified number of colours. PNG output produces a transparent background.
Surface and path3 garbage collection was fixed.