Final Polish Pass

[jalextowle]

This PR goes through and improves the comments, does some last minute renaming of the ForwarderFactory to ERC20ForwarderFactory, and fixes a short-coming of the Hyperdrive factory.

[github-actions]

Hyperdrive Gas Benchmark

Benchmark suite	Current: 9b69138	Previous: 5a8e9f7	Deviation	Status
addLiquidity: min	1546 gas	1546 gas	0%	🟰
addLiquidity: avg	67508 gas	67807 gas	-0.4410%	✅
addLiquidity: max	292728 gas	292728 gas	0%	🟰
checkpoint: min	1150 gas	1150 gas	0%	🟰
checkpoint: avg	48253 gas	48160 gas	0.1931%	🚨
checkpoint: max	191173 gas	191668 gas	-0.2583%	✅
closeLong: min	1492 gas	1492 gas	0%	🟰
closeLong: avg	28382 gas	28216 gas	0.5883%	🚨
closeLong: max	148543 gas	152481 gas	-2.5826%	✅
closeShort: min	1494 gas	1494 gas	0%	🟰
closeShort: avg	30248 gas	29900 gas	1.1639%	🚨
closeShort: max	129747 gas	146139 gas	-11.2167%	✅
initialize: min	1495 gas	1495 gas	0%	🟰
initialize: avg	213307 gas	213307 gas	0%	🟰
initialize: max	253585 gas	253585 gas	0%	🟰
openLong: min	1432 gas	1432 gas	0%	🟰
openLong: avg	50764 gas	50693 gas	0.1401%	🚨
openLong: max	187405 gas	187912 gas	-0.2698%	✅
openShort: min	1520 gas	1520 gas	0%	🟰
openShort: avg	49982 gas	50011 gas	-0.0580%	✅
openShort: max	180144 gas	180144 gas	0%	🟰
redeemWithdrawalShares: min	1488 gas	1488 gas	0%	🟰
redeemWithdrawalShares: avg	20276 gas	20152 gas	0.6153%	🚨
redeemWithdrawalShares: max	108516 gas	108234 gas	0.2605%	🚨
removeLiquidity: min	1552 gas	1552 gas	0%	🟰
removeLiquidity: avg	149911 gas	148737 gas	0.7893%	🚨
removeLiquidity: max	324881 gas	324317 gas	0.1739%	🚨

This comment was automatically generated by workflow using github-action-benchmark.

[jrhea]

lgtm. just a couple of nits and jokes