v0.6.0-beta

• Add a rounding_rule option to grid_sample nearest-neighbor sampling. The
  default, "bankers", matches PyTorch's ties-to-even behavior;
  "round_half_up" matches resample(..., mode="nearest") at half-integer
  coordinates. PyTorch does not provide this option.
• Match PyTorch nearest-neighbor grid sampling at reflected half-integer
  boundaries and float32 coordinates immediately adjacent to a rounding tie.