newRPL update wishlist

[compsystems]

R3: The CLEAR operation of the keyboard could be like that of HP-Prime i.e. if you are typing on the input or cmd line only the input line is cleared and the rest is kept (stack), a second press of CLEAR clears the stack

R4: On the input line with shift left delete up to the cursor.
0.707|10678118723564565 [LS-CLEAR] 0.707