Added a new version: 0.2.0

List of changes:

1. Added a new game object: a barrel
2. Added blood when taking damage
3. Added a restart button
4. Added music settings
5. Added sound settings
6. The Interface scales to fit the screen
7. Changed the object spawn generator
8. Fixed a bug with infinite spawn of portals
9. Changed the tile set
10. Fixed a tile rendering error
11. Reduced monster stamina
12. The Monster can't see through the walls
13. Changed the time of teleportation of the monster