0.5.0

Maintenance release with some minor breaking changes.

• Fix DataclassConfig.from_path() when argument is a URI (#111)
• Fix and extend flow field derivative based losses (#117)
  • Add flow_derivatives() with default spacing for finite differences assuming a normalized flow field.
  • Add curl(), divergence(), and divergence_free_flow() functions to core library.
  • Modify finite_differences() to pad input using replicate instead of padding output with zeros.
  • Add mode='forward_central_backward' to avoid padding using replicate or constant values.
  • Add mode='bspline' to spatial_derivatives().
  • Generalize cubic_bspline_jacobian_*() to jacobian_*() functions for all mode values.
  • Fix bending energy, curvature, and divergence loss functions.