• Round linear curves now automatically check for the existence of left and right
  connected segments if the flags buffer is empty. Left segments exist if the
  segment(id-1) + 1 == segment(id) and similarly for right segments.
• Implemented the min-width feature for curves and points, which allows to increase the
  radius in a distance dependent way, such that the curve or points thickness is n pixels wide.
• Round linear curves are closed now also at their start.
• Embree no longer supports Visual Studio 2013 starting with this release.
• Bugfix in subdivision tessellation level assignment for non-quad base primitives
• Small meshes are directly added to top level build phase of two-level builder to reduce memory consumption.
• Enabled fast two level builder for user geometries when low quality build is requested.