v1.28:

-Upgrade the compiler

v1.27:

-Minor bug fixes

v1.26:

-Minor changes in mode selection

v1.25:

-Added a simple curve fitting with polynomial and Gaussian functions.

v1.24:

-Updated the screen ratio for newer Galaxy S8 etc.

v1.23:

- Added directional zooming

v1.22:

- Added the custom keyboard and more

v1.2:

- Added polar, parametric plots as well as type-in data plot.

v1.1:

- Corrected the drawing order of curves.