Biggles is a Python module for the creation of publication-quality 2D scientific plots. Its features include an elegant, high-level interface, a simple TeX interpreter, and postscript, png, gif, svg, and x11 output formats.
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Mostly "under the hood" changes (almost 4 times faster for plots with large amounts of data, and clipping the data to the plot region), removal of the python-libplot module, a new module for matlab emulation, and a multipage() function for making multi-page PostScript output.