text: from .histogram import (
      Histogram, SparseHistogram, HistogramPlotter2D,
      histograms_to_pandas_dataframe, Histogrammer
  )
  from .wham import WHAM
  from .lookup_function import (LookupFunction, LookupFunctionGroup,
                               VoxelLookupFunction)
  
  from .resampling_statistics import ResamplingStatistics, BlockResampling
  