Patch

I got featured on the front page of itch under Fresh Games, which is the first time this has happened, so that's awesome!

Anyway I booted up the game, and realised I'd uploaded the desktop version to web so all the menu options didn't work properly.

I've very quickly updated all this and refactored some code so it auto-detects whether you're playing in a browser or not so hopefully I haven't broken anything else in the process!

Also added icon to Win and Linux versions.