equilibrium_setup
- compas_cra.equilibrium.equilibrium_setup(assembly, penalty=False)
 Set up equilibrium matrix.
- Parameters:
 - assembly
Assembly The rigid block assembly.
- penaltybool, optional
 if True then return penalty matrix.
- assembly
 - Returns:
 csr_matrixEquilibrium matrix Aeq (penalty=False) or Equilibrium penalty matrix Aeq@B (penalty=True).