Issue #198: Circle detail gets smaller than part (dismine/valentina)

New issue 198: Circle detail gets smaller than part https://bitbucket.org/valentinateam/valentina/issue/198/circle-detail-gets-smaller-than-part

Peter Gsellmann:

Creating a full circle part of radius 100mm and then a seam allowance of 30mm yields a cutting circle of 70mm instead of 130mm