v0.9.1

• Fixed an issue with multi-orbital models where onsite/hopping modifiers would return unexpected results if a new energy array was returned (rather than being modified in place).

• Fixed Solver.calc_spatial_ldos and Solver.calc_probability returning single-orbital results for multi-orbital models.

• Fixed slicing of Structure objects and made access to the data property of SpatialMap and StructureMap mutable again.