0.57  2022-10-25  lichtkind
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    * = maintenance and starting mod matrix
    * + change main function of X and Y pendulum
    * + sped up sketch drawing
    * ? cleanep up POD from incorrect leftover bits
    * ? added some POD
    * " cleaned left lower corner of GUI
    * " made all comboboxes readonly (were never meant to be editable, but select only)
    * " deactivated help dialogs

0.56  2022-10-18  lichtkind
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    * = maintenance
    * ~ corrected R frequency damping factor
    * / corrected changes file
    * ? rewrote pen line section in documentation

0.55  2022-10-17  lichtkind
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    * = feature enhancement and refinement
    * * draw lines (connect dots) (good for vector graphics)
    * + radius damping acceleration
    * + independent frequency damping
    * + added Gamma(1/2) to frequency factor constants
    * ~ change dot density to quadratic behaviour
    * / ranemed all damping related setting keys
    * " separate linear and circular pendula in two tabs
    * " cleaner GUI
    * ? rewrote pendulum section in documentation
    * ! fixed tests srezic++
    * ! bug in rotation matrix

0.51  2022-10-14  lichtkind
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    * = maintenance
    * / put custom widgets in own name space
    * ! crash when using image size menu

0.50  2022-10-10  lichtkind
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    * = maintenance and one planned major feature
    * * frequency base factors for relative values to other pendula and math constants
    * ? added and rewrote some docs
    * ! save frequency decimals in INI
    * ! fixed tests srezic++
    
0.45  2022-10-08  lichtkind
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    * = maintenance
    * + display color flow in progress bar
    * - clean some dead code
    * ? push color code into module Graphics::Toolkit::Color  

0.44  2022-10-02  lichtkind
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    * = minor optimizations
    * + change image size in menu
    * + change default image format in menu
    * ~ added POD image for second panel
    * ~ fix POD links

0.43  2022-09-15  lichtkind
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    * = GUI cleanup
    * + organize setting in tabs
    * + clean up command buttons into a main menu
    * + progress bar for drawing
    * ! smooth loading of settings without sketch triggering event loops
    * ~ doc typos

0.42  2022-09-14  lichtkind
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    * = post first release bug fix release
    * + sketch mode to get fast previews when playing with knobs
    * - removing not working toggle button for tool tips
    * ! fix visual element enable mechanism due changed key words of color flow
    * ! crash when last settings list in config was empty
    * ! crash when saving settings


0.41  2022-09-14  lichtkind
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    * = initial CPAN release
    * + 4 pendula: X, Y, Z (wobble), Rotating with haveing each setting of
    *   - pendulum length (amplitude)
    *   - frequency (integer + decimal), invertable 
    *   - offset, checks for 90 and 180 degree
    * + line length, dot denisty and dot size
    * + color flow: no, linear, alternating, circular
    * + save images as SVG, JPEG and PNG
    * + save and load settings in INI files
    * + quick save of images and settings for series of files