Features introduced in 5.2
-  Nonlinear coordinate systems (see set nonlinear)
-  Automated binning of data (see bins)
-  2D beeswarm plots. See set jitter
-  3D plot style zerrorfill
-  3D lighting model provides shading and specular highlighted (see lighting).
-  Array data type, associated commands and operators. See arrays.
-  New terminals sixelgd, domterm
-  New format descriptors tH tM tS handle relative times (interval lengths).
 See time_specifiers.