devel: Renamed benchmark folders to their full name
devel: Reactivated MPI support in testing
fix: Set tests to accept very small deviations

See the 0 != -0 bug for example
devel: Restructered robotic problems
fix: Corrected normalisation in getCircleCircleIntersection
fix: Fixed remaining compile bugs
devel: Update from armadillo 4.400.2 to 4.450.4
devel: Added namespaces
devel: Make use of <array> for 2D rotations
fix: Fixed sizeof miscalculations (by replacing it with C++11 functionality)