Add the dataset files to the install list

Signed-off-by: Patrick Avery <patrick.avery@kitware.com>

Author: psavery

tomviz/CMakeLists.txt

@@ -625,6 +625,8 @@ endforeach()
 set(tomviz_python_modules
   __init__.py
   _internal.py
+  dataset.py
+  external_dataset.py
   fix_pdb.py
   operators.py
   internal_dataset.py

tomviz/python/tomviz/external_dataset.py

@@ -8,9 +8,7 @@
 ARRAY_TYPES = (collections.abc.Sequence, np.ndarray)
 
 
-# FIXME: do this
-# class Dataset(AbstractDataset):
-class Dataset:
+class Dataset(AbstractDataset):
     def __init__(self, arrays, active=None):
         # Holds the map of scalars name => array
         self.arrays = arrays