v1.0    2012-08-05  Initial release
v1.1    2012-08-09  Documentation, improvements to UI, remove hints kludge.
v1.2    2013-11-29  Fix installation on Windows.
        2013-12-03  Fix Windows icon display issue by adding set to GridButton
                    init.
v1.2.1  2015-05-29  Amend setup to include launcher for all posix systems.
                    Encapsulate version references according to PEP 8.