Optimize.
More optimization.
3 * b2
Sqrt
create project.
Some header nonsense.
Benchmark numbers 'before'.
Benchmark numbers 'after'.
Inconsistency!
After eggrobin's review.
Merge pull request #103 from pleroy/OptimizeNBody

Minor optimizations to the computation of the force.
Intellisense is confused.
Two-argument constructor.
0 mass.
UI nonsense.
Misc, target 3.5 instead of 4.5 (Screw Unity).
Fixed a bug in Rotation.
Unique ptr to bodies
After eggrobin's review.
Merge pull request #104 from pleroy/MasslessMassive

Separate massless and massive bodies at construction.  Pass unique_ptr to indicate ownership transfer.