2.1.0

• Modified pygeoprocessing.numpy_array_to_raster to take boolean arrays.
• Modified pygeoprocessing.convolve_2d to guard against nonsensical queries
  to both ignore_nodata_and_edges=True but also mask_nodata=False.
  A query of this combination now raises a ValueError to guard against
  programmer error.
• Added a custom exception class ReclassificationMissingValuesError to
  pygeoprocessing. pygeoprocessing.reclassify_raster raises this
  exception instead of ValueError when a raster pixel value is not
  represented in value_map. This custom exception provides a list of
  missing raster pixel values in a missing_values attribute that allows
  the caller access to the pixel values that are missing through a Python type
  rather than indirectly through an error message.
• Correcting the docstring for pygeoprocessing.numpy_array_to_raster to
  specify that the pixel_size parameter must be a tuple or list, not an
  int.
• pygeoprocessing.routing.delineate_watersheds_d8 now has an optional
  parameter write_diagnostic_vector. When True, this parameter will
  cause a new vector per outflow feature to be created in the working_dir.
  This parameter defaults to False. This is a change from prior behavior,
  when the diagnostic vectors were always created, which could occupy a lot of
  computational time under large outflow geometries.
• Added a pygeoprocessing.multiprocessing.raster_calculator function which
  matches the API and results of pygeoprocessing.raster_calculator but uses
  multiple processing cores to compute raster calculation blocks.
  when the diagnostic vectors were always created, which could occupy
  significant computational time under large outflow geometries.
• Minor performance improvement to pygeoprocessing.convolve_2d by
  preventing a pre-processing step that initialized temporary rasters with zero
  values as well as added asynchronous work distribution for kernel/signal
  block processing.
• Modified logging message for pygeoprocessing.new_raster_from_base when
  filling a raster such that an informative error message is printed with
  context as to the function, file, status, and value being filled.