Tweaks (#53)

* Fix loglevel parsing

* Bump dependencies

* Change --filter to --target

* Update documentation

* Import log handler as "loghandler"

* Change command color to purple

* Change flag name to target

* Update formatting

cmd/root.go

@@ -62,5 +62,11 @@ func initConfig() {
 			log.Fatal(err.Error())
 		}
 	}
-	log.SetLevelFromString(viper.GetString("loglevel"))
+	lvl, err := log.ParseLevel(viper.GetString("loglevel"))
+	if err != nil {
+		log.Fatalf("Couldn't parse log level: %s", err)
+		return
+	}
+	log.SetLevel(lvl)
+
 }