Europa rescue! - 5 levels playable demo

So, here it is, Europa mission is now a 5-level working demo. I renamed Day 0 to Day 1 for the sake of clarity and added two more levels compared to the previous demo.

The main development cycle nears the end - I need a day or two to think things over and decide on the MVP for ER! now, but at least two more levels will be added to the game before leaving alpha stage.

This basically means there is some chance I will close the story in time for My First Game Jam 2022 to conclude, which is a fair and good plan.