KTutorial 0.4 released!

KTutorial 0.4 changes:
-Editor
-Support for saving and loading a tutorial
-Undo/redo for every edition action
-Use editor support module in KTutorial library to provide several features
-Choose an object from a target application
-Text completion for object, signal and event names
-Test a tutorial in the target application
-Add tutorials about how to
-Create a tutorial
-Interact with the target application
-Several minor fixes

-Library
-Editor support module to provide introspection of applications, thus easing
the design of tutorials
-Widget highlighting, so widgets can be linked from the text of a step and
highlighted when the link is activated
-Add WaitForWindow to wait for windows or dialogs to be shown
-Fix the tutorial floating widget getting blocked by modal dialogs
-Several minor fixes