Window layout management improvements:
Automatic arrangement has been improved in different ways.
Auto save window layout when changing main form size.
Added buttons to the main window that let you quickly select a predefined layout.
Some bugs fixed when switching between layouts.
Pinned windows now ignored when rearranging.
Window layouts can now be sorted.
Workspace Windows do now snap to other windows when moving or sizing.
Added new option to let the transformation reference point move relatively with the object.
Added keyboard shortcut to hide/show handles when in transformation mode.
Made layer effect settings window to be resizeable.
Pattern drawing settings now allow 100 x 100 repetitions.
When creating an animation in 3d then the frame preview option now shows all visible layers and not only the active one.
Included experimental multi threaded canvas rendering.
Fix: Importing an alpha transparent PNG image into an non alpha transparent project not working if frame sizes differ.
Fix: Importing an image to an existing project could not be made undone.
Fix: Error when turning layer into single image layer + undo/redo.
Fix: Stamping brush over frames (Alt + Ctrl) ignored last selected frame in timeline. Hints of freehand tools now only show extra key options if they are available (AnimPainting, AnimBrush stamping, stamping brush over selected frames) and usable.
Alt or Ctrl now don't activate layer move or color picker if multiple frames are selected in the time line to stamp on.
Fix: When toggling a layer group (open/close) while another layer was active, the layer list jumped to the active layer.
Fix: Error when using shortcut for "Restore Brush" when having the brush resize too active.
Fix: Menu item "Paste as new Layers" was always active.
Fix: Error when closing drop shadow effect dialog while trackbar of opacity input was visible.
Fix: Re-apply Color palette layer effect not correctly working on file export.
Fix: When loading a true color file that is defined to open PM, then the color reduction dialog was hidden behind the main window making the application defunct.
Fix: Editing palette color plus drawing plus undo also reverted the color modification.
Fix: When adding/removing frames along with undo/redo then previous palette changes where undone as well.
Fix: Crash when using extended oval/rectangle edit mode with stroke layer effect. If there is a definition of an oval/rectangle active with extended edit mode and a layer FX "Stroke" was added then the program closed due to an internal error.
