Uses json format with jsoncpp as a parser. Then show it in a QTreeView.
Shows inclusive/exclusive times like explain.despesz does. Also a similar
coloring scheme as applied.
This is something libpq also does when opening and closing connections.
This mechanism uses a use count and based on that count dll's are loaded
and unloaded. By adding those calls to main we make sure the use count
stays above zero for the whole duration of the program.
