Redraw game icons

android/gradle.properties

assets/icons/difficulty_easy.png

assets/icons/difficulty_hard.png

assets/icons/difficulty_medium.png

assets/icons/difficulty_nightmare.png

assets/icons/size_2x2.png

assets/icons/size_3x2.png

assets/icons/size_3x3.png

assets/icons/size_4x4.png

assets/icons/skin_default.png

assets/icons/skin_food.png

assets/icons/skin_monsters.png

assets/icons/skin_nature.png

fastlane/metadata/android/en-US/changelogs/43.txt

fastlane/metadata/android/en-US/images/featureGraphic.png

...ane/metadata/android/en-US/images/phoneScreenshots/01.png

fastlane/metadata/android/fr-FR/changelogs/43.txt

icons/difficulty_easy.svg

icons/difficulty_hard.svg

icons/difficulty_medium.svg