Release 4.2.3   
    - Various bug fixes in library and GUI.
    - Various memory leaks fixes in library.
    - Minor performance improvments.
    - Adjusted scorep.spec file to the new ompregion description "openmp".
    - Examples are being installed now into share/doc/cube/example.

Release 4.2.2 	
    - Implemented aggregation of loop iterations in GUI.
    - Added support for different CubePL engine versions.
    - Added support for Fujitsu K computer.
    - Extended cube_dump utility with flexible call path selection and an additional CSV layout.
    - Support for Qt5.
    - Added to GUI a split of the 1-D topology into 2-D.
    - Various bug fixes as well as performance and usability improvements.

Release 4.2.1
    - Enabled zlib compression of metadata.
    - Added support for storing attributes for all metadata items.
    - Improved zooming in topology view (zoom into selected planes).
    - Added multiple selection in topology.
    - Improved selection of elements in system tree.
    - Improved performance of the clusters' expansion.
    - Changed default behavior to build Java reader if Java compiler can be found.
    - Various bug fixes as well as performance and usability improvements.

Release 4.2
    - Significant amount of code refactoring.
    - Bug fixes.
    - Performance improvements.
    - Support for flexible system tree.
    - Improvements in build system.
    - Extension of cube-config tool.
    - Support for clustering.
    - Improvements in performance of cube_remp2 tool.
    - Refactoring of CubePL engine.

Release 4.1.6
    - Bug fixes.
    - Improved Qt library detection.

Release 4.1.5
    - Bug fixes.
    - Added support of scaling behavior function as a performance value.
    - Added support for PGI and SUN Studio compiler (without GUI).
    - Improved export functionality of cube_dump tool.

Release 4.1.4
    - Bug fixes.
    - Improved internal architecture of the topology widget to increase maintainability.
    - Improved view of the topology domains.
    - Improved build system, removed warnings and bugs for POWER6.
    - Added cube syntax version check.

Release 4.1.3
    - Bug fixes.
    - Added highlighting schema for Cpp/Fortran/CubePL sources.
    - Improved the detection of the source code place for the source code editor.
    - Enhanced the tool cube_dump. It is able to display flat tree and perform aggregation over threads.
    - Added support for Windows.
 