[Config] Added ReadMe file
[Config] Renamed license file
[Math] Fixed triangulation bug with flat triangles

The situation where flat triangles (consisting of 3 collinear points) are inserted could lead to edge flips that resulted in badly oriented triangles.
Squashed 'extlibs/aurora/' changes from aa43ae8..5fe623c

5fe623c [Config] Renamed license file
0298f7e [Config] Added ReadMe file

git-subtree-dir: extlibs/aurora
git-subtree-split: 5fe623cee66c011bd68b450e7fc3eecdccae42d6
[Extlibs] Merged Aurora