#36 Add a \"Select All\" Ctrl + A to the Edit menu.

[Bernhard Götz]

Add a \"Select All\" Ctrl + A to the Edit menu for selecting all items of the diagram.

[Kostantinos]

I would like to create an Object Oriented Analysis draft of this
feature request! Also for the feature of deselecting an item after u selected more than one items using "Shift +click". More specifically, I am going to create a Use Case
Diagram, a Class Diagram, a Collaboration Diagram and a Sequence Diagram.
I
hope that these would help the future development of the code.
I hope that help would be provided if needed! Thanks in advance!