Release v2.2.3

Today a new minor update of PLCEdit - Version 2.2.3. It was compiled for
Windows & Mac OS X and fixes the bug of not working session manager
under Windows 7 and brings the changes of v2.2.2 to the Mac version.

Sorry, but I’m not able to compile the Linux version at the moment Sad
Please build Linux version by downloading the sources and Qt4.x.