Update Wasm

[hajimehoshi]

Some FPS drops were pointed out:

https://dstoiko.github.io/posts/go-pong-wasm/

So I checked the examples on the website and noticed the same frame drops especially when maintaining a key pressed on the keyboard. It’s not a critical issue but needs to be investigated further… Maybe in another post when I get some time to debug!

but hajimehoshi/ebiten#1175 should improve the situation.

[hajimehoshi]

Already done