v1.1.1 

# SKEL .pkl files
- Remove all the unused key
- Remove the dependancy to chumpy and trimesh
- Store the sparce matrices as from scipy.sparse._coo.coo_matrix
- Rename the `weight` into `skin_weights` for clarity

# BSM
- Add the /bodyset prefix to the socket parent frame ofthe markers to avoid a crash in AddBiomechanics

v1.1.0 

# BSM
Add example sequences AMASS (.npz), SKEL (.pkl), OpenSim (.mot)
Add spine mesh back
