Fixed DataFileSet to accept 0 or None as a chunk argument
Fixed DataFileSet to accept 0 or None as a chunk argument

kfieldho/SMQTK,Purg/SMQTK,Purg/SMQTK,kfieldho/SMQTK,Purg/SMQTK,kfieldho/SMQTK,kfieldho/SMQTK,kfieldho/SMQTK,Purg/SMQTK,Purg/SMQTK,kfieldho/SMQTK,kfieldho/SMQTK,kfieldho/SMQTK,Purg/SMQTK,Purg/SMQTK,kfieldho/SMQTK,Purg/SMQTK,Purg/SMQTK