message: Removed chronic usage.
diff: @@ -481,11 +481,9 @@ class MBTR(Descriptor):
  system = self.get_system(system)
  # Initializes the scalar numbers that depend no the system
  - with chronic.Timer("Scalars"):
  self.initialize_scalars(system)
  # Create output with the currently set grid
  - with chronic.Timer("Grid"):
  grid = {}
  if self.k1 is not None:
  grid["k1"] = self.k1["grid"]
  @@ -494,6 +492,7 @@ class MBTR(Descriptor):
  if self.k3 is not None:
  grid["k3"] = self.k3["grid"]
  output = self.create_with_grid(grid)
  +
  return output
  def create_with_grid(self, grid):
  