Update 2048 tutorial

[soywiz]

Update 2048 tutorial

[soywiz]

• https://github.com/korlibs/blog.korge.org/blob/main/_posts/2020-06-02-korge-tutorial-writing-2048-game-step-0.md
• https://github.com/korlibs/blog.korge.org/blob/main/_posts/2020-06-11-korge-tutorial-writing-2048-game-step-1.md
• https://github.com/korlibs/blog.korge.org/blob/main/_posts/2020-07-01-korge-tutorial-writing-2048-game-step-2-controls.md
• https://github.com/korlibs/blog.korge.org/blob/main/_posts/2020-07-28-korge-tutorial-writing-2048-game-step-3-animation.md
• https://github.com/korlibs/blog.korge.org/blob/main/_posts/2020-10-07-korge-tutorial-writing-2048-game-step-4-data-saving.md

[soywiz]

Outdated things:

• Replace Text with TextOld and font = Html.Font...(bmpFont) with just font = bmpFont