merge wolf code into arepl

I've also been thinking about talking to duroktar about merging arepl/wolf. Arepl could stand to benefit with wolf's UI / inline style and in return I could rebrand arepl as wolf, vastly expanding wolf's potential user base. I think we could probably work out some sort of agreement that would be beneficial to us both. But practically speaking merging the code might incur significant rework to adapt it such that it would be the same difficulty just to do it myself.