Fix query header and node-state cli cmds (#192)

* fix cli header cmd and node-state

* fix bug

* changelog

CHANGELOG.md

@@ -38,7 +38,8 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ### Bug Fixes
 
-* (modules/light-clients/06-solomachine) [\153](https://github.com/cosmos/ibc-go/pull/153) Fix solo machine proof height sequence mismatch bug.
+* (02-client) [\#192](https://github.com/cosmos/ibc-go/pull/192) Fix IBC `query ibc client header` cli command. Support historical queries for query header/node-state commands.
+* (modules/light-clients/06-solomachine) [\#153](https://github.com/cosmos/ibc-go/pull/153) Fix solo machine proof height sequence mismatch bug.
 * (modules/light-clients/06-solomachine) [\#122](https://github.com/cosmos/ibc-go/pull/122) Fix solo machine merkle prefix casting bug. 
 * (modules/light-clients/06-solomachine) [\#120](https://github.com/cosmos/ibc-go/pull/120) Fix solo machine handshake verification bug. 
 

modules/core/02-client/client/utils/utils.go

@@ -131,14 +131,19 @@ func QueryTendermintHeader(clientCtx client.Context) (ibctmtypes.Header, int64,
 		return ibctmtypes.Header{}, 0, err
 	}
 
-	height := info.Response.LastBlockHeight
+	var height int64
+	if clientCtx.Height != 0 {
+		height = clientCtx.Height
+	} else {
+		height = info.Response.LastBlockHeight
+	}
 
 	commit, err := node.Commit(context.Background(), &height)
 	if err != nil {
 		return ibctmtypes.Header{}, 0, err
 	}
 
-	page := 0
+	page := 1
 	count := 10_000
 
 	validators, err := node.Validators(context.Background(), &height, &page, &count)
@@ -173,7 +178,12 @@ func QueryNodeConsensusState(clientCtx client.Context) (*ibctmtypes.ConsensusSta
 		return &ibctmtypes.ConsensusState{}, 0, err
 	}
 
-	height := info.Response.LastBlockHeight
+	var height int64
+	if clientCtx.Height != 0 {
+		height = clientCtx.Height
+	} else {
+		height = info.Response.LastBlockHeight
+	}
 
 	commit, err := node.Commit(context.Background(), &height)
 	if err != nil {