Backporting fixes:
- Fix version cmdclass handling. 2735 by jaheba
- Remove usage of glide in tsf-reader. 2737 by jaheba
- Fix: use non-strict inequality in definition of coverage 2738 by lostella
- Update Available Models 2740 by abdulfatir
- Fix MXNet NOPScaler 2744 by abdulfatir
- Add scipy requirement 2745 by abdulfatir
- Fix dataset file discovery. 2777 by jaheba
- Fix pandas removed deprecations in tests 2778 by lostella
- Fix: Loading of nested paths in FileDataset. 2779 by jaheba
- Prophet: Pass 'item_id' and 'info' to forecast. 2780 by jaheba