0.0.6

This is the upgrade revamp update. Upgrades are now behind a button in the bottom right that goes green whenever you have new upgrades to buy. I've made multiple upgrades available at once at the beginning for a bit of choice.

Next update will include more upgrades and the next major piece of the puzzle which should balance tutorials out more and was always planned.

I also did some rebalancing with the cost and growth rate of tutorials.