GitLab

Make `make clean` remove all build artifacts, and do not warn about
CUDA_VERSION when simply running 'clean'.

Fixes #532

replace private with public https repo URL

Fix  import crash caused by __main__.py reference to nonexistent cuda_setup.main.get_cuda_lib_handle

Fix bitsandbytes import error when CUDA is unavailable

Replace libcudart.so with PyTorch's CUDA APIs

[BugFix] replace view+continuous with reshape