Version 0.2.3

Fixes #6: Made sure that empty strings are mapped correctly.

Version 0.2.2

Fixes #5: Made sure that ensure_cols method also considers index name before adding missing columns.

Version 0.2.1

Bug #4: Fixed issue with duplicate columns when calling remap with ensure_cols=True.

Version 0.2.0

Issue #2: Added functionality to ensure that certain columns exist on data frame even if it is empty.
Issue #3: Added ability to remove all columns that are not in a specific data set or any dataset.

Version 0.1.1

Fixes #1 More options to customise the Jupyter notebook output required

Version 0.1.0

v0.1.0

Fixed problem with not deleting files in directory.

Initial production release

v0.0.3

Resolved issue with Readme.md getting rejected by PyPi.