Dual quaternion transformation estimation algorithm added
dq renamed to dual_quaternion;
tests added
dual quaternion precision changed to double to pass the tests
whitespaces added to comply with PCL style; small typos fixed
Fixed a typo in the normal estimation radius, making the unit test for SampleConsensusPrerejective fail
Merge pull request #250 from andersgb1/master

Fixed failed unit test since #212
Partially fixes issue #124
more whitespaces added
Polydata object was only being allocated but the content was not copied.
Thus passing an empty object to renderViewTesselatedSphere.
Merge pull request #255 from arbeitor/master

Polydata object was only being allocated but the content was not copied.
Merge pull request #252 from jpapon/vtk_pointer_fix

Partially fixes issue #124
Merge pull request #169 from szagoruyko/dualquaternion

Dual quaternion transformation estimation feature
Fix build with Qt5
Merge pull request #257 from circlingthesun/master

Fix build with Qt5
Add missing include and forward declaration.

Forward declaration of vtkRenderWindow was missing in pcl_plotter.h.
Also it is not sufficient to forward declare vtkSmartPointer, the
corresponding header shound be included.
Merge pull request #260 from taketwo/fix-plotter-includes

Add missing include and forward declaration in pcl_plotter.h
Fixed documentation for removeNaNFromPointCloud().

The old (misleading) documentation was copied over from another overload
of this function.
Merge pull request #261 from taketwo/fix-documentation

Fixed documentation for removeNaNFromPointCloud()