New update - Demo v2

In this version some bugs were fixed and 2 things were added:

- House: In the first biome feature, make a home and improve it. This feature is not complete (90% incomplete) and is planned to be developed in future versions

- New boss: The third boss of the first biome, a large tree that, even though it cannot shoot projectiles, will be a great challenge to defeat. Where does the boss's music come from?

Minimum changes:

- Now saving and loading is safer, you can't make accidental clicks.

- The game now has an icon.

- Added sound effects when hitting