Version 0.4.0

Added

• Add ParameterTransform class to transform parameters into a different space (e.g. log
  space) @yonatank93
• Add Weight class to set weight for energy/forces/stress. This is not backward
  compatible, which changes the signature of the residual function. Previously, in a
  residual function, the weights are passed in via the data argument, but now, its
  passed in via an instance of the Weight class. @yonatank93

Fixed

• Fix checking cutoff entry @adityakavalur
• Fix energy_residual_fn and forces_residual_fn to weigh different component

Updated

• Change to use pre-commit GH action to check code format