TM:PE Version 1.8.13

• Bugfix: Timed traffic ligt data can become corrupt when upgrading a road segment next to a traffic light, leading to faulty UI behavior (thanks to @brain for reporting this issue)
• Bugfix: The position of the main menu button resets after switching to the free camera mode (thanks to @impact and @gravage for reporting this issue)
• Bugfix: A division by zero exception can occur when calculating the average number of waiting/floating vehicles
• Improved selection of overlay markers on underground roads (thanks to @padi for reminding me of that issue)
• Minor performance improvements