Love your app
I just wanted to let you know that I really enjoy your calculator application. Several months ago, probably more than a year I searched for RPL linux programs. I downloaded several and ended up keeping yours around.
It is one of the first things I install when I install Linux. Also, I have one of my HotKeys on my keyboard dedicated to gdcalc so that I have quick access! It is even labeled on the keyboard.
Great job and keep up the good work. It seems like the only issues I've had is with the percent change function...but I can't seem to remember what the problem was. I'll check it out and get back with you!