Lightning-flash

Added

- Added `RetinaNet` & `backbones` to `ObjectDetector` Task ([121](https://github.com/PyTorchLightning/lightning-flash/pull/121))
- Added .csv image loading utils ([116](https://github.com/PyTorchLightning/lightning-flash/pull/116),
[117](https://github.com/PyTorchLightning/lightning-flash/pull/117),
[118](https://github.com/PyTorchLightning/lightning-flash/pull/118))

Changed

- Set inputs as optional ([109](https://github.com/PyTorchLightning/lightning-flash/pull/109))

Fixed

- Set minimal requirements ([62](https://github.com/PyTorchLightning/lightning-flash/pull/62))
- Fixed VGG backbone `num_features` ([154](https://github.com/PyTorchLightning/lightning-flash/pull/154))

Added

- Added `ObjectDetector` Task ([56](https://github.com/PyTorchLightning/lightning-flash/pull/56))
- Added TabNet for tabular classification ([101](https://github.com/PyTorchLightning/lightning-flash/pull/#101))
- Added support for more backbones(mobilnet, vgg, densenet, resnext) ([45](https://github.com/PyTorchLightning/lightning-flash/pull/45))
- Added backbones for image embedding model ([63](https://github.com/PyTorchLightning/lightning-flash/pull/63))
- Added SWAV and SimCLR models to `imageclassifier` + backbone reorg ([68](https://github.com/PyTorchLightning/lightning-flash/pull/68))

Changed

- Applied transform in `FilePathDataset` ([97](https://github.com/PyTorchLightning/lightning-flash/pull/97))
- Moved classification integration from vision root to folder ([86](https://github.com/PyTorchLightning/lightning-flash/pull/86))

Fixed

- Unfreeze default number of workers in datamodule ([57](https://github.com/PyTorchLightning/lightning-flash/pull/57))
- Fixed wrong label in `FilePathDataset` ([94](https://github.com/PyTorchLightning/lightning-flash/pull/94))

Removed

- Removed `densenet161` duplicate in `DENSENET_MODELS` ([76](https://github.com/PyTorchLightning/lightning-flash/pull/76))
- Removed redundant `num_features` arg from Classification model ([88](https://github.com/PyTorchLightning/lightning-flash/pull/88))

Added

- Added flash_notebook examples ([9](https://github.com/PyTorchLightning/lightning-flash/pull/9))
- Added `strategy` to `trainer.finetune` with `NoFreeze`, `Freeze`, `FreezeUnfreeze`, `UnfreezeMilestones` Callbacks([39](https://github.com/PyTorchLightning/lightning-flash/pull/39))
- Added `SummarizationData`, `SummarizationTask` and `TranslationData`, `TranslationTask` ([37](https://github.com/PyTorchLightning/lightning-flash/pull/37))
- Added `ImageEmbedder` ([36](https://github.com/PyTorchLightning/lightning-flash/pull/36))