Mostly cleanup of unused code.
Fixed linespacing to use the font metrics.
Removed unused usings.
Simpler conversion to alpha premultiplied greyscale.
Disabled border padding which is causign artifacts.
Use the font height for unrendered characters.
Re-worded some odd-sounding English.
Added XML documentation for Rectangle.ToString() and the Vector2 constant vectors.
Added XML docs for Vector2.Add()/Subtract().
Cleaned up a few issues in a recent documentation patch.
Fixed ComputeHash(Stream) to read the whole stream.
Cleanup of ComputeHash(byte[]).
Merge pull request #2865 from dneelyep/patch-3

Minor documentation additions
Fixed path in batch.
Rebuilt the stock effect with the correct hash values.
Updated project file.
Updated test effects to latest version.
Merge pull request #2869 from SickheadGames/develop

Fixed 2MGFX Bug
Add XML documentation for Vector3/4's static vector properties, and their add/subtract methods.
Added XML docs for Vector2/3.Negate(). Holding off on Vector4 since I'm not sure if Vector4s are used in the same way (a direction) as Vector2/3s.