- improvement of internal alignment: close coordinates to ellipse
- fix icon in TaskSketcherConstraints: major and minor were swapped
Internal Geometry:

This version sets the lines in the exact position so that the solver does not have extra work, and the ellipse does not move when adding internal geometry.

It has lots of solver convergence problems.
Minor bug fix: Internal Alignment constraint

Do not toggle back to normal construction lines that are to be assigned to internal constraint
Bug fix: Adding sketcher-tools to part-design