Merge pull request #57 from actown/travis_go14

Have Travis CI test on go 1.14.x.

.travis.yml

@@ -3,6 +3,7 @@ language: go
 go:
   - 1.9
   - 1.10.x
+  - 1.14.x
 
 go_import_path: mumble.info/grumble
 

cmd/grumble/client.go

@@ -161,7 +161,7 @@ func (client *Client) IsVerified() bool {
 
 // Log a panic and disconnect the client.
 func (client *Client) Panic(v ...interface{}) {
-	client.Print(v)
+	client.Print(v...)
 	client.Disconnect()
 }