Ventusky v52: Easier navigation, smoother map, and sync across devices

Ventusky version 52 brings three useful improvements that make the app easier and more comfortable to use every day.

The first change is better map navigation. Country names are now visible directly on the map, and in the USA, state names have been added as well. This makes it faster to orient yourself and explore weather in different parts of the world.

The second improvement is performance. We worked on the map engine and fine-tuned the rendering to make movement and zooming much smoother. In practice, this nearly doubled the FPS, so scrolling now feels far more fluid, even on older devices.

The third big update is synchronization across devices. After signing in, both your saved places and your weather notifications are automatically synced with your account. That means you can set everything up on one device and have it ready on another, whether you switch between phone and laptop or use both regularly. You'll find the places and notifications here: https://my.ventusky.com/weather/