Add some comments

build/params_testnet.go

@@ -23,6 +23,7 @@ const UpgradeSmokeHeight = 51000
 
 const UpgradeIgnitionHeight = 94000
 
+// TODO: Actual epoch needs to be filled in
 const UpgradeActorsV2Height = 128888
 
 // This signals our tentative epoch for mainnet launch. Can make it later, but not earlier.

chain/messagepool/gasguess/guessgas.go

@@ -42,6 +42,7 @@ var Costs = map[CostKey]int64{
 	{builtin0.StorageMinerActorCodeID, 16}: 5325185,
 	{builtin0.StorageMinerActorCodeID, 18}: 2328637,
 	{builtin0.StoragePowerActorCodeID, 2}:  23600956,
+	// TODO: Just reuse v0 values for now, this isn't actually used
 	{builtin2.InitActorCodeID, 2}:          8916753,
 	{builtin2.StorageMarketActorCodeID, 2}: 6955002,
 	{builtin2.StorageMarketActorCodeID, 4}: 245436108,