Put swing classes in the io, lang, prefs, and xml packages to specific swing packages to make the library Java 12-friendly
The MDIFramework-swing.jar library does not contain anymore any class which are already in the MDIFramework-core.jar library
Reorganize Javadoc to clearly separate core classes from Swing or JavaFX classes
Update wiki
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Put swing classes in the io, lang, prefs, and xml packages to specific swing packages to make the library Java 12-friendly
The MDIFramework-swing.jar library does not contain anymore any class which are already in the MDIFramework-core.jar library
Reorganize Javadoc to clearly separate core classes from Swing or JavaFX classes
Update wiki