[Inkscape-user] NEW: Trace Bitmap dialog redesign and new parameters

* This dialog now provides access to three more tracing parameters:

o Suppress speckles: If set, spots or speckles larger than the given size are suppressed in the trace.

o Smooth corners: This parameter controls how much smoothing is applied to corners in the traced path.

o Optimize paths: If set, trace paths are optimized by joining adjacent Bezier segments with the given tolerance.

* The dialog is redesigned to use three tabs: Mode, Parameters, and Preview. The controls are reorganized to be easier to find. Most labels and tooltips are rewritten for clarity.

* The trace preview image is made twice larger.