2022-12-31 DOT arb

Now, let's do a $DOT-arb.

./vern, my main man, ./vern sez:

• DOT,axlUSDC,wETH,USK,axlUSDC,DOT

But I'm going to kick things off via the DOT/USK order book, then swap USK for axlUSDC via that order book.

Because I CAN!

• 2022-12-31 placed: 35.828896 DOT -> _ USK, SELL at 4.167 fulfilled