Name: Cube GUI
Version: 4.4
Notes:
    - Various performance improvements.
    - Allow an automatic demangling of region names if possible.
    - Improved "Help" display:
      -- use QWebgEngine of Qt if available;
      -- display "User Guide";
      -- display help files for the plugins if available.
    - Improved diplay of such unis as "bytes" or "occurences". Added a human readable format.
    - Improved "Heatmap" and "Barplot" plugins to display variable number of iterations.
    - Improved "Info" display:
      -- display metrics information;
      -- display region information;
      -- display Online Metric Description;
      -- dispoly Region Help.
    - Improved "Source Code viewer":
      -- implemented as a plugin;
      -- display line numbers;
      -- store local path to a source tree if .cubex was moved and 
         adjust it on-the-fly;
      -- automaticaly display a proper source if another call path or region selected;
    - Improved Plugin tabs organization:
      -- define a plugins as a "System View" or "Other";
      -- allow to close plugin if not needed.
    - Provide "Diff", "Merge" and "Mean" as a context free plugin in GUI.
    - Added "Metric Identification" plugin for comfortable identification of a source of the metric, 
      such as Score-P, Scalasca or Remapper.
    - Added "Sunburst" as a standard system tree visualization plugin.
    - Provide a "metric creation" plugin for the comfortable derived metrics creation:
      -- improved drop-down suggestions;
      -- improved syntax highlight.
    - Improved display of the tree item values:
      -- one can provide a plugin for customized display;
      -- provide own visualization plugins for Tau Metrics Values;
      -- added an example for value visualization plugin.
    - Improved sorting behaviour in GUI.
    - Introduce "important" - "normal - "not important" property of marker.
    - Allow to detach plugin tabs into a new window. A context menu to detach a tab
      appears if right mouse is clicked on a tab. If a detached window is
      closed, it is re-added to the tab bar. 
    - Multiple selection of derived metrics is not possible.
    - Using ScoreP for GUI and Library instrumentation for the automatic performance benchmarking.
    - Manual initialization of a plugin after GUI start is possible.
    - Extended marker API.
    - Plugin can define an icon as a marker.
    - Improved automatic CubePL keyword suggestion while creation of a derived metric.
    - Improved plugins search strategy.
    - Added support for multiple plugin search directories, via env variable and via GUI setting.
    - Allow to specify colors of the selected item in the tree panel of a Cube GUI.
    - Source code viewer allows search within the displayed text..
    - Enhanced the start windows ot the Cube GUI..
    - Report uset Qt version in the "About" dialog of a GUI.
    - Improved the Qt detection steps while the configure time.
    - Using ScoreP for GUI and Library instrumentation for the automatic performance benchmarking.
    - Manual initialization of a plugin after GUI start is possible.
    - Extended marker API.
    - Plugin can define an icon as a marker.
    - Improved automatic CubePL keyword suggestion while creation of a derived metric.
    - Improved plugins search strategy.
    - Various bug fixes in GUI.
