Yarpviz version 2.0.0

[Nicogene]

Yarpviz 2.0.0 is out now!
This upgrade changes several visualization aspects:

• Now also the disconnected ports are shown.
• Added Hide disconnected ports in "View" menu.
• Added Debug mode to show yarplogger and all \log* ports that by default are hidden.
• Added Machines list in the TreeWidget.
• Now Modules, Ports and Machine have a hierarchical structure, if you hide a process, also its port will be hidden.
• Changed visualization following this hierarchy.
• Added the focus on the element selected in the TreeWidget
• Added ColorMode, for coloring the ports node in function of the process that they belong to.