Allowing for Vsync to be disabled on DirectX desktop buils.
Fixed MaximumFrameLatency to be reset on ApplyChanges().
We now force the default MaximumFrameLatency when vsync is disabled.
Improved performance of the bounding box from a point cloud method.
Exposed PresentInterval on SwapChainRenderTarget so that VSync can be disabled if desired.
Removed the setting of MaximumFrameLatency from SwapChainRenderTarget, since this could override the setting from the GraphicsDevice.
Merge branch 'DirectX11VsyncDisable' of https://github.com/SickheadGames/MonoGame into DirectX11VsyncDisable
Added GetFrameLatency extension to PresentInterval.
GraphicsDevice now uses this extention.
Slightly clarified documentation.
Changed SwapChainRenderTarget to use new PresentInterval extention.
Added new TargetBlendState class.
BlendState class extended to support optional per-target blend states under DX.
Added overloaded BlendState.Dispose(bool).
Enabled BlendFunction Max and Min in Windows and Linux

BlendFunction.Min and BlendFunction.Max does not work in Windows.
The exception NotImplementedException is thrown when used.
Tested on WindowsGL
Merge pull request #1926 from curupaco/patch-1

Enabled BlendFunction Max and Min in Windows and Linux
Fix XACT IsPlaying properties.
Merge pull request #1935 from flibitijibibo/xact-isplaying

Fix XACT IsPlaying properties.
Removing [Flags] From the Keys.cs enum.
Merge pull request #1943 from nightst4r/Enum_FlagRemove

Removing [Flags] From the Keys.cs enum.
Merge branch 'develop' into dxblend
The blend properties are only set on the primary target now.
Disabled those windows touch helpers (like the press & hold context box).
Fix Texture2D PVRTC size computation
Fix for game init when running under unit test runner
Merge pull request #1950 from SickheadGames/wintouchfix

Disabled Windows Touch Helpers