For the compatibility with the latest transformers lib.

Fix the wrong bb setting. Fix the bug by latest transformers and update req.txt.

Add half precision setting in README.

Correct the ack to Freepik for their kind support!

Add complete metric scores of BiRefNet_HR and BiRefNet for general use.

Polish up README.

Add performance comparison table in README.

Change weights from epoch 230 to epoch 130.

Initilize the BiRefNet_HR for higher resolution images.

initial commit