Flowgraphy: Weather

This update spent quite a lot of time looking at clouds. Since last month, I had already begun to think that AI might be better at shader programming than I am. This time, I accepted it and asked with the proper attitude of a student. Kindly, AI introduced me to metaballs. At this point, it is fairly clear who the developer is and who the teacher is. Cloud shadows now have more variety, and the clouds themselves arrive with a little more style. Forecast transitions are smoother, and lightning now illuminates nearby clouds according to where it strikes. They are still clouds made of math, but their acting has improved a little. I also improved performance in the Classic UI and made the rendering path lighter. The clouds became heavier, but fortunately the app did not. Thanks as always to everyone using Flowgraphy Weather. Next, I may work on snow and rain. AI will probably have opinions about those too. Please look forward to it.