vendor dependencies, make some changes to how input is done

vendor/github.com/ebitengine/gomobile/event/paint/paint.go

@@ -0,0 +1,24 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package paint defines an event for the app being ready to paint.
+//
+// See the github.com/ebitengine/gomobile/app package for details on the event model.
+package paint // import "github.com/ebitengine/gomobile/event/paint"
+
+// Event indicates that the app is ready to paint the next frame of the GUI.
+//
+// A frame is completed by calling the App's Publish method.
+type Event struct {
+	// External is true for paint events sent by the screen driver.
+	//
+	// An external event may be sent at any time in response to an
+	// operating system event, for example the window opened, was
+	// resized, or the screen memory was lost.
+	//
+	// Programs actively drawing to the screen as fast as vsync allows
+	// should ignore external paint events to avoid a backlog of paint
+	// events building up.
+	External bool
+}