Backporting fixes:
- Fix broken links in Available-models table (#2211 by @rshyamsundar)
- Fix r_forecast wrapper to shift start date when truncating time series (#2216 by @abdulfatir)
- Improve arrow reading performance (#2217 by @mr-1993)
- Fix dtype bug in piecewise_linear and add a test (#2224 by @rshyamsundar)
- Fix bug in to_quantile_forecast (#2225 by @eugeneteoh)
- Fix gluonts.mx.trainer.Trainer in case of empty data loader (#2228 by @lostella)
- Fix feed-forward models when features are provided (#2238 by @lostella)
Full changelog: v0.10.4...v0.10.5