Fix varlen generation by passing seq_idx to causal_conv1d 

Fix MambaChunkScanCombinedFn returning incorrect number of gradients 

Bump to v2.2.0 

Bump to v2.1.0 

Bump to v2.0.4 

Rename k_activation.py -> k_activations.py 

Add k_activation.py 

Fix imports 

Mamba-2 code release 

Bump to v1.2.2