- Table rows got a opacity fade in animation to prevent flickering during initialisation when user has changed visibility of columns.
- `mwFileUpload`: Made cancel button visible by default. To hide it set `hideCancelBtn` to `true`.
- `mwFileUpload`: Added some small animations to the uploader.
- `mwFileUpload`: Adjusted text of cancel button to `Abort upload`.
- Fix #144 by persisting columns that have been hidden or made visible by the user
- Fix #154 by changing the visibility handling of columns. Provided test cases to check functionality
