* Expose the seqlen variable for flash-attn without padding.
* Fix the batched call.
* Adapt for the varlen variant.
* No need to set the batch strides when in varlen mode.
* Add a test (disabled at the moment).
* Get the test to work properly.
* Again set a few extra params.
* Use the appropriate kernel sizes.
* Add all the kernel sizes.
* Parallel compiling.
* Reduce the amount of parallelism.
* Add the missing kernel.
* Fix a typo.
* Remove bf16 support for now.