After a week of discussion, hints, chitchatting about both minimal dedicated trimmings and shmups guidelines in general, here comes a slightly improved version of the test demo!

Some of the perceptible changes here:
- the game is much easier overall;
- dropped coins are easier to pick up, with a longer on-screen time, a higher arc and now they follow the scrolling, preventing the next baddies of the same wave to instantly overlap them;
- changed drawing priority between enemy bullets and player's shots, resulting in a much cleaner output;
- hitting the walls and the baddies now produces an alarming metallic friction sound fx;
- fixed a bug about dead+game quitting;
- paths and bullets now continue to move when the player dies, and the panel are recharged (not cleared).