Version 1.1.0

Set VersionPrefix to 1.0.0

Set VersionPrefix to 1.0.0

Support .NET Standard.

Fix double-calculation in ColoumbForce. Turns out as a nice optimisat…

…ion, though requires recalibrating physical constants.

Replace PointMass.Damping with ViscousForce.

Move Spring to the Forces folder.

Use multiplication instead of Math.Pow(_, 2).

Test and fix bug in computation of rectangle corners.

Add unit tests and fix bug in Rectangle2f.TryIntersect.