svglite 1.1.0.9000

svglite 1.1.0

Text metrics now converted from points to pixels (#45, #48) - this fixes text alignment issues.
Intermediate outputs are always valid SVG (#53).
New svgstring() returns plot as a string (#40, @yixuan).
Use raster test compatible with older versions of R.
Add support for clip(). This also fixes a number of minor issues with grid graphics (@yixuan, #47 and #49).
Fix incorrect device size (#50).

svglite is fully featured svg graphics device that works on all platforms, forked from RSvgDevice. It supports all graphics device features:

All types of line dashing are supported (#15). All line end and line join styles are supported (#24).
Text is now coloured, and uses the same default fonts as R (Arial, Times New Roman, and Courier). Font metrics are computed using the gdtools package so that plotmath() and strwidth() now work.
Transparent colours are now generated with rgba() rather than using stroke-opacity and fill-opacity styles (#16). NA fills and colours are translated to "none".
par(bg) affects the background colour (#8).
Rasters are supported by embedding base64-encoded pngs in a data url (#2).
polypath() is now supported, which also allows the showtext package to render fonts correctly with this device (#36).

We also made a few other tweaks to the rendered SVG:

Only the viewBox attribute of <svg> is set (not width and height): I'm reasonably certain this makes it easier to use in more places (#12).
Default styling properties are specified in a global <style> element: this reduces overall file size, and should make it easier to re-style the output for your own needs.
You can now only produce a single page per device - previously this worked but produced incorrect output (#5).
Output no longer contains dummy <desc> element (#4)

And added some helper functions:

xmlSVG() and htmlSVG() make it easier to view generated SVG, either as raw XML or in RStudio/the browser.
editSVG() opens the SVG in the default SVG viewer/editor.