Surface 3D Plot Lite

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V1.34:
-Set the max screen ratio for Galaxy S8
V1.33:
-Added Custom keyboard.
-Hide/show Menu bar
-Added Function list
V1.32:
-Minor bug fix.
V1.3:
-Added cylindrical z(r,t), cylindrical r(t,z), spherical r(t,p), and parametricx(u,v); y(u,v); z(u,v) surface 3D plots.
-More color maps.
-DiamondNet mode/view.
V1.2:
-Added an option for drawing the axes.
-Removed the home page link in Settings.
-Updating the graph after closing the setting dialog.