CX version 0.2.2

This release has a few bugfixes and additional features.

• Fixed a bug in CX_SlidePresenter where 0 duration slides would have their content shown on screen prior to slide presentation.
• Added a way to generate balanced Latin squares with Algo::LatinSquare, where balanced means that each condition precedes each other condition an equal number of times.
• CX_Display now allows you to access the renderer used by it with getRenderer().
• Bugfix in reopenWindow() where the requested width and height of the display were ignored.
• Fixed a bug in CX_Logger::captureOFLogMessages() where oF messages were not actually captured.