Changes to 1.0.20 * Add more sizes of icons including SVG, and add Keywords to the .desktop file * Documentation updates * Fix PeriodicExtension function * ErrorFunction (erf) is using MPFR for real values so it is far more precise and faster * The Fourier series example is no longer using a hand coded graph and hand computed series, so it can now be easily modified to show series for different functions * Fix GCC 5 compilation * A couple of minor fixes in the plotting code including one possible crasher * Translation updates (Wolfgang Stöggl, Marek Černocký, Maria Mavridou, Мирослав Николић, Miguel Rodríguez Núñez, Daniel Mustieles, Piotr Drag, Rafael Ferreira) * During making of these changes the author (Jiri) was partially supported by NSF grant DMS 1362337 and the Oklahoma State University