remove old debug prints, update TODO

src/config.go

@@ -278,10 +278,8 @@ func (config *Config) SwitchTheme(theme string) {
 }
 
 func (config *Config) ToggleGridlines() {
-	fmt.Printf("toggle grid lines, current: %t\n", config.ShowGrid)
 	config.ShowGrid = !config.ShowGrid
 	config.RestartCache = true
-	fmt.Printf("toggle grid lines, new: %t\n", config.ShowGrid)
 }
 
 func (config *Config) ToggleEvolution() {

src/options.go

@@ -1,10 +1,8 @@
 package main
 
 import (
-	"fmt"
 	"image/color"
 
-	"github.com/alecthomas/repr"
 	"github.com/ebitenui/ebitenui"
 	"github.com/ebitenui/ebitenui/widget"
 	"github.com/hajimehoshi/ebiten/v2"
@@ -96,8 +94,6 @@ func (scene *SceneOptions) Init() {
 	gridlines := NewCheckbox("Show grid lines",
 		scene.Config.ShowGrid,
 		func(args *widget.CheckboxChangedEventArgs) {
-			fmt.Println("CHECKBOX CALLED")
-			repr.Println(args.State)
 			scene.Config.ToggleGridlines()
 		})