Bug Fixes and Improvements in Track Visibility — Aero GPX Steam update #1098500

Time Trial ghosts unfortunately weren't ready in time for this update, but I'll try to have them for the next one! Just a few changes made it into this one, but they're kinda fun. -Fixed bug that made falling retires impossible if the player hadn't started lap 1 yet -Added turn arrows to various turns on tracks to help with visibility -Modified dithering on healing/boost lasers to allow for better visibility at greater distance -Fixed "Track Text Here" in Time Trial menu Thank you for playing!