Changes

• new fixed-wing model: Chekker 0,73m (free download plan at www.flugmodell-magazin.de)
• Bugfix Piro Trainer
• Bugfix Rescue Button
• Self levelling for fixed-wing models (shortcut: p)

We will be switching the simulator to the new Unity input system in one of the next updates. We want to ensure beforehand that this step only brings advantages. Please test whether it works with your input devices.