Changes to 1.0.27 * Add Save button to toolbar * Add calculus example "zooming animation" to show differentiability * Allow setting editor color scheme in the settings dialog * Closing window acts exactly like the quit button/menu item * Current program is marked with larger font instead of bold, since that doesn't work with all themes. * Improve performance of surface plots, and get rid of flicker * Remove menu icons * Leave the Stop button on the plot window enabled if a script is running * Remove dependence on AMTK * Translation updates (Daniel Mustieles García, Enrico Nicoletto, Yuri Chornoivan, Anders Jonsson, Daniel Șerbănescu, Asier Sarasua Garmendia, Jordi Mas, Alan Mortensen, Мирослав Николић, et moi)