* Added Icosahedron mesh, a multilevel 3D TriangleMesh, that evolves to an Icosphere. Level 8 gives around one million nodes.
* Include the hability to add a density function, to generate a contour plot of this function plotted over the icosphere.
* Added Palette, a utility class to generate tiny images with all the colors required for textures.
* Added several utility methods to Point3D.
* Added a test to generate and show an icoshere. 
* Added animation to change dynamically the density function, diameter or number of colors without rebuilding the icosphere
* Revision in IcosahedronMesh in recursive method, adding a Collector to convert Stream<float> to float[]
* Revision in IcosahedronMesh, parallelStream for extremes calculation, Color.hsb color
* Revision in IcosahedronMesh, parallelStream for faces calculation (since order is not relevant)
* Revision in IcosahedronMesh, added new faster collector for List to float[]
* Revision in IcosahedronMesh, added constructor to collector
* Revision in IcosahedronMesh, added constructor to collector
Implements Cone using Mesh/ShapContainer style similar to CapsuleMesh.  Texture coordinates not yet implemented.
Merge origin/master
* Created FloatCollector class in utils, for usual tasks of converting List<float> to float[] with streams
* Created FloatCollector class in utils, for usual tasks of converting List<float> to float[] with streams
* Added abstract class TexturedMesh to provides support for different mesh implementations taking into account four different kind of textures: None, Image (by vertices or by texture indices),  Colored vertices, Colored faces. For the last two ones, number of colors and density map have to be provided.
* Added helper to deal with color palettes, and density plots
* Added Primitives: SpringMesh, CurvedSpringMesh and SegmentedTorusMesh. With IcosahedronMesh, the four of them extend TexturedMesh, and support the four kind of textures.
* Added tests for these four classes, to test four different textures and also with animation to change the texture
Merge branch 'master' of https://github.com/Birdasaur/FXyz