Tidied up the test module to make it more PEP8 compliant

Changed configuration documentation to refer to appdirs

Added project home page to readme

Added 'active' attribute to contact to allow me to deactivate contacts

Bumped version numbers and made sure that dumping to HTML works regardless of curreent working directory

Updated version number and documentation to reflect whoswho is now a Python 3 application

Merge

Ignore pytest cache

Fixed the test to work in Python 3 and added tests for a bug where address lines were repeated. Then I fixed the bug

Removed history from code to documentation

Changed the copyright notice to include up to 2020

Refactored requirements between dev and production and updated documentation accordingly.

Changed the project home page URL in the documentation

Updated documentation them to Read the Docs

Started the migration to Python 3 with the tests

Tweaking the configuration access code

Removed deprecated method call

Minor changes to work in modern Python

Fixed search by category and added a unit test for correct behaviour

Exclude .cache from mercurial