Submitted by 0xsanson, also found by pauliax
IndexPool doesnt collect fees for barFeeTo. Since this Pool contains also a method updateBarFee(), probably this is an unintended behavior.
Also without a fee, liquidity providers would probably ditch ConstantProductPool in favor of IndexPool (using the same two tokens with equal weights), since they get all the rewards. This would constitute an issue for the ecosystem.
Add a way to send barFees to barFeeTo, same as the other pools.
maxsam4 (Sushi) confirmed
