[W.I.P.] Curve Tools plugin

[micheus]

A new update is available.

Code:

- Fixed bèzier handle length for the first vertex control which has been truncated;
- Fixed the normal value for ribbon shape used in Sweep;
- Fixed the computation of the vectors (TNBs) and then was removed the need
  for re-compute the vectors to the 'Tangent' twist mode;
- Fixed close command when using CTRL+Click;
- Fixed wrong bèzier handle orientation when this kind of curve is closed;
- Fixed sweep object which was aligning the shape wrongly;
- Added drag and drop option on Outliner window to duplicate a dragged object
  using the curve where it was drop. It can be a single curve over the mouse
  pointer or multiple selected curves on Curve's geometry window;

Plugin updated: link