ebiten: rename FloatLayouter -> LayoutFer

Updates #2285

examples/windowsize/main.go

@@ -96,7 +96,7 @@ type game struct {
 }
 
 func (g *game) Layout(outsideWidth, outsideHeight int) (int, int) {
-	// As game implements the interface FloatLayouter, Layout is never called and LayoutF is called instead.
+	// As game implements the interface LayoutFer, Layout is never called and LayoutF is called instead.
 	// However, game has to implement Layout to satisfy the interface Game.
 	panic("windowsize: Layout must not be called")
 }

gameforui.go

@@ -126,7 +126,7 @@ func (g *gameForUI) NewScreenImage(width, height int) *ui.Image {
 }
 
 func (g *gameForUI) Layout(outsideWidth, outsideHeight float64) (float64, float64) {
-	if l, ok := g.game.(FloatLayouter); ok {
+	if l, ok := g.game.(LayoutFer); ok {
 		return l.LayoutF(outsideWidth, outsideHeight)
 	}
 

run.go

@@ -80,12 +80,12 @@ type Game interface {
 	// You can return a fixed screen size if you don't care, or you can also return a calculated screen size
 	// adjusted with the given outside size.
 	//
-	// If the game implements the interface FloatLayouter, Layout is never called and LayoutF is called instead.
+	// If the game implements the interface LayoutFer, Layout is never called and LayoutF is called instead.
 	Layout(outsideWidth, outsideHeight int) (screenWidth, screenHeight int)
 }
 
-// FloatLayouter is an interface for the float version of Game.Layout.
-type FloatLayouter interface {
+// LayoutFer is an interface for the float version of Game.Layout.
+type LayoutFer interface {
 	// LayoutF is the float version of Game.Layout.
 	//
 	// If the game implements this interface, Layout is never called and LayoutF is called instead.