Propulsion Retouches

This version is made for Create: Propulsion 0.3.0 beta.

---What's New---

- The Propeller now has extra detail to better stand out from other Create machines.
- The Wooden Blade has been fully retextured.
- The Tilt Adapter texture has been cleaned up.
- The Lodestone Tracker now uses brass nails instead of steel ones.
- The Hot Air Burner has a new texture and model.
- The Hot Air Burner now features an animated flame when active, similar to lighting an Empty Blaze Burner with Flint and Steel.
- The Redstone Magnet has been completely redesigned again. Yes, again. No more, I promise.
- The Thruster exhaust nozzle has been remodelled and retextured.
- The Assembly Gauge received a small texture tweak.
- The Envelope has been retextured (subject to change).