Asymptote http://asymptote.sourceforge.net is a powerful descriptive vector graphics language for technical drawing, inspired by MetaPost but with an improved C++-like syntax. Asymptote provides for figures the same high-quality level of typesetting that LaTeX does for scientific text.
Support for the portable compressed 3D vector file format V3D was added. The default value of settings.prc was changed to false. Efficient order-independent transparency was implemented for modern OpenGL platforms and the OSMesa offscreen rendering engine (with no interactive transparency support for Mac OS X and WebGL). The WebGL library now uses WebGL2 if available. Image-based lighting was implemented. Many bug fixes and improvements were made to Xasy, allowing objects drawn with the graphical editor to be saved to and restored from a .xasy file, as well as being exportable to an .asy file. A function was added to graph a parametric function with control points determined by the specified derivative. The recommended PostScript viewer for MSWindows is now Sumatra PDF. The workflow for generating transparent PDFs and PNGs was fixed. Emacs lasy-mode was patched to work with Emacs >= 23. Support for the Language Server Protocol was added. Compilation with COMPACT=0 is supported again. All threads now return the same error code. A remote command-line interface to http://asymptote.ualberta.ca is now available.