Build 100 (YAY!) — Prospice Steam update #1170703

- You can no longer drive backwards while your engine is off- Increased truck's performance on inclines- Potentially fixed a rare bug which broke truck's physics when you exit it (if it still happens, please let me know)- Small trees have physics now, so you can bend and even uproot them with enough force- Added sharpening setting to the graphics menu. The game's visuals are suppose to be blurry by design, but in case someone doesn't like it, they have three sharpening options to choose from now- Modified the screen noise shader, made it fall off in intensity closer to the center of the screen, so noise is more visible in the corners where it's less distractingWith the introduction of breakable trees, I had to make a static/dinamic object manager, which keeps track of tree instances and appropriately swaps between non-interactable and interactable versions.It's a brand new system, so if ...