One component per file; GAME OVER offers CONTINUE

PRD G1 asks for one component per file. Eight files held two or
three; their eleven extra components move to files of their own,
helpers stay where both sides use them, and an archtest now fails
any file that holds two.

PRD 4.4 and the request say an error always offers CONTINUE.
ErrorState's button read RETRY; it now reads CONTINUE, under the
CONTINUE? countdown, on the crash screen and the lost page alike.

input/button.go

@@ -76,19 +76,3 @@ func Button(c *ui.Context, text string, o ButtonOptions) ButtonResult {
 	}
 	return res
 }
-
-type IconButtonOptions struct {
-	Variant  Variant
-	Size     Size
-	Disabled bool
-}
-
-type IconButtonResult = ButtonResult
-
-// IconButton is a square button named for assistive technology.
-func IconButton(c *ui.Context, icon *pixel.Sprite, name string, o IconButtonOptions) IconButtonResult {
-	if name == "" {
-		panic("input: IconButton needs a name")
-	}
-	return Button(c, "", ButtonOptions{Variant: o.Variant, Size: o.Size, Icon: icon, Disabled: o.Disabled, Label: name})
-}

input/iconbutton.go

@@ -0,0 +1,23 @@
+package input
+
+import (
+	"github.com/egoist/mygo/ui"
+
+	"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
+)
+
+type IconButtonOptions struct {
+	Variant  Variant
+	Size     Size
+	Disabled bool
+}
+
+type IconButtonResult = ButtonResult
+
+// IconButton is a square button named for assistive technology.
+func IconButton(c *ui.Context, icon *pixel.Sprite, name string, o IconButtonOptions) IconButtonResult {
+	if name == "" {
+		panic("input: IconButton needs a name")
+	}
+	return Button(c, "", ButtonOptions{Variant: o.Variant, Size: o.Size, Icon: icon, Disabled: o.Disabled, Label: name})
+}