Filter interface changes
These changes make the filter classes more consistent with the VTK-m coding standards as well as adding some simplification for users.
These changes fix issues #59 (closed), #60 (closed), #61 (closed), and #62 (closed).
These changes make the filter classes more consistent with the VTK-m coding standards as well as adding some simplification for users.
These changes fix issues #59 (closed), #60 (closed), #61 (closed), and #62 (closed).