remove panic that shouldn't have been there and publish 0.4.1

.gx/lastpubver

-0.4.0: QmZCzaXTudYW8kxbXz2Up5v47Uvaww9L7WJPizPF8pADUp
+0.4.1: QmPhtZyjPYddJ8yGPWreisp47H6iQjt3Lg8sZrzqMP5noy

chan.go

@@ -113,10 +113,7 @@ type chanResponseEmitter struct {
 }
 
 func (re *chanResponseEmitter) SetError(v interface{}, errType cmdkit.ErrorType) {
-	err := re.Emit(&cmdkit.Error{Message: fmt.Sprint(v), Code: errType})
-	if err != nil {
-		panic(err)
-	}
+	re.Emit(&cmdkit.Error{Message: fmt.Sprint(v), Code: errType})
 }
 
 func (re *chanResponseEmitter) SetLength(l uint64) {

package.json

@@ -34,6 +34,6 @@
   "language": "go",
   "license": "MIT",
   "name": "go-ipfs-cmds",
-  "version": "0.4.0"
+  "version": "0.4.1"
 }