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* New API function outline_arc_line() converts an outline defined by points into an outline of four possible formats: Tkinter display, svgwrite, dxfwrite or FreeCAD Part.
* API function cnc_cut_outline() supports smoothing and enlarging line-line, line-arc and arc-arc corners.
* Additional API functions such as outline_rotate(), outline_reverse()
* All Cnc25D API function are gathered in the cnc25d_api module
* Box wood frame design example generates also BRep in addition to STL and DXF.
* Box wood frame design example support router_bit radius up to 4.9 mm with all others parameters at default.