- Update to 0.24.4
  * Enhancement: Layer colors are iterated for named layers without
    layer numbers as well. Such layers are created when reading
    DXF files for example and all layers had the same color
    initially. Now, these layers will be assigned different colors.
  * Bugfix: RBA::TilingProcess#threads was not working properly
    when assigning a value of 1.
  * Bugfix: The perimeter computation now has changed to 64 bit numerics
    reducing the risk of numerical overflow. In earlier versions,
    the perimeter computation of integer type shapes (polygons,
    boxes, regions) was performed with 32 bit length which is
    not sufficient to represent total perimeters of full layouts.
  * Bugfix: The OASIS writer's S_TOP_CELL standard property now is
    set to the correct value when using "Save cell as".
  * Bugfix: Some patches are provided for enhanced compatibility with
    MacOS. One MacOS-only bug was related to a crash when re-registering
    of PCell's while developing then.
  * Bugfix: PCell guiding shape parts could not be selected in partial
    editing mode using a drawn selection box.
  * Enhancement: The color of the guiding shapes can now be configured
    individually.
  * Bugfix: OASIS reader was not properly associating CELLNAME properties
    with cells as the standard requires. Instead CELLNAME properties were
    ignored.
  * Bugfix: Strict mode compatibility issues in OASIS writer:
    File level PROPERTY records were not put right at the beginning of the file,
    empty tables were not listed with 0 position, property value strings were
    not referenced by ID and the property modal variables were referenced
    sometimes after name records (specifically CELLNAME with standard
    properties enabled). According to the specification, the name records
    reset these variables so this is not correct. Other readers may report
    errors for such files.
  * Enhancement: OASIS writer file size reduction. Now, the OASIS writer
    will opimize the arrangement of cell array instances so that
    modal variables can be used for a better compaction.
  * Enhancement: During script debugging now the Assistant window is active
    even while the debugger is executing a script. The main window is
    still inactive however to avoid fatal cross-interactions between
    the debugger and the user interface.
  * Bugfix: The Python PCell sample was broken.
  * Bugfix: slowly bending paths have not been displayed correctly.
  * Bugfix: coordinates might have been swapped in the box properties
    page when switching from local to absolute coordinates and
    back.
  * Bugfix: certain ruler styles with independent x and y axis have not
    been displayed properly when using a global transformation.
  * Enhancement: the performance of "Flatten cell" is enhanced significantly
    in cases of many instances.
  * Bugfix: DRC output was producing new layers with an empty layer name
    selector (no major issue, but confusing).