When using gcc 10 and PyCXX 7.1.4 on Fedora there is an error because the conversion from size_t to Py_ssize_t is ambiguous
See https://forum.freecadweb.org/viewtopic.php?f=4&t=52502
The class Py::Tuple is also incorrectly used here and causes a memory leak
For certain OCCT versions in the file ShapeUpgrade_UnifyDomain a method of the class Precision is used but Precision.hxx is not included which can lead to a build failure.
+ rename getCurve2dFromGeom2d to makeFromCurve2d
+ add function makeFromCurve and makeFromTrimmedCurve like makeFromSurface
+ implement OffsetCurve.BasisCurve
+ fix memory leak in BRepOffsetAPI_MakePipeShellPy
the UI and the property is not consistent. In the dialog we use the term angle upon user feedback while the property still has the name "skew" in it.
I simply forgot this change in my PR that implemented skew prisms.
This is now corrected by this PR.