Adjustable stack font size and vertical paddings

[sphh]

Thank you for fixing the disappearing buttons (#1)!

But now I encounter another problem: I can only see two elements of the stack + the input line

May I suggest, that

• the font size in the stack is configurable
• the vertical padding of the buttons (and in the stack?) is configurable

If I could remove the vertical padding of the buttons, I could vertically shrink the keyboard and thus increasing the available vertical space for displaying the stack.

[apesic]

Thanks for the suggestions. I'll take a look at either making those customizable or having them scale better with the screen size.