Add SetOption to all middleware and handlers

modules/coin/handler.go

@@ -1,6 +1,8 @@
 package coin
 
 import (
+	"github.com/tendermint/tmlibs/log"
+
 	"github.com/tendermint/basecoin"
 	"github.com/tendermint/basecoin/errors"
 	"github.com/tendermint/basecoin/types"
@@ -74,6 +76,11 @@ func (h Handler) DeliverTx(ctx basecoin.Context, store types.KVStore, tx basecoi
 	return basecoin.Result{}, nil
 }
 
+func (h Handler) SetOption(l log.Logger, store types.KVStore, key, value string) (log string, err error) {
+	// TODO
+	return "ok", nil
+}
+
 func checkTx(ctx basecoin.Context, tx basecoin.Tx) (send SendTx, err error) {
 	// check if the tx is proper type and valid
 	send, ok := tx.Unwrap().(SendTx)

modules/fee/handler.go

@@ -23,6 +23,7 @@ type AccountChecker interface {
 type SimpleFeeHandler struct {
 	AccountChecker
 	MinFee types.Coins
+	stack.PassOption
 }
 
 func (_ SimpleFeeHandler) Name() string {