deprecate MDS in favor of using Graph Transformer for constituting trunk to initial set of coordinates for refinement, given new Allan Costa and Baker lab papers

add graph transformer dep

0.3.2

integrate changes

demonstrate sidechain

This reverts commit 0408c9c7c40c63726828530c2ef69a1f22de4550.

This reverts commit 1b9b5664e6249ade13c8fee705df915dc6b7a203.

add ability to apply kronecker attention to MSAs as well for cross attention, use sum instead of mean to preserve sequence length information

add KronInputWrapper, handle kronecker operator for primary sequence as both queries and context (cross attention)