next sequence comment, CHANGELOG updates

CHANGELOG.md

@@ -6,6 +6,10 @@ BREAKING CHANGES
 
 * Remove go-wire, use go-amino
 
+FEATURES:
+
+* Add auto sequencing to client
+
 ## 0.14.1 (April 9, 2018)
 
 BUG FIXES

client/core/core.go

@@ -140,6 +140,7 @@ func (ctx CoreContext) SignBuildBroadcast(name string, msg sdk.Msg, cdc *wire.Co
 	return ctx.BroadcastTx(txBytes)
 }
 
+// get the next sequence for the account address
 func (c CoreContext) NextSequence(address []byte) (int64, error) {
 	if c.Decoder == nil {
 		return 0, errors.New("AccountDecoder required but not provided")