Add Vector interface
Add Path interface
Add Bezier path
Add PathTest
Add dragging
Add BSpline (only cubic for now).
Remove usage of Vector#tmp() in Bezier and BSpline
Add better visual test
Remove PathTest from the tests.
Replace CatmullRomSpline, reuse SplineTest by renaming PathTest to SplineTest.
Revert SplineTest to PathTest.
Revert CatmullRomSpline
Merge branch 'master' of https://github.com/libgdx/libgdx into misc
Update GdxTests to use PathTest
Remove SplineTest and CatmullRomSpline, rename CatmullRom to CatmullRomSpline.
Merge pull request #241 from xoppa/misc

Add Vector, Path, Bezier and BSpline