Removed SpriteFontDescription.CharacterRegions ( did not exist in xna ).
Added SpriteFontDescription.Characters
Removed SpriteFontDescription constructor taking a region list  ( did not exist in xna ).
EffectParameter now shows its current value in the watch window.
Replacing string.Format calls with string.Concat
Some GraphicsAdapter cleanup.
Cleanup and documentation pass.
Added GraphicsAdapter.UseReferenceDevice.
Support GraphicsAdapter.UseReferenceDevice in DirectX desktop and WinStore.
Enabled GraphicsProfile.HiDef and GraphicsAdapter.UseReferenceDevice for all visual tests by default.
Merge branch 'develop' into testfix
Removed now unnessasary GraphicsProfile.HiDef.
Merge pull request #2884 from SickheadGames/testfix

Support UseReferenceDevice For Unit Tests
Fix to allow GraphicsProfile.HiDef when GraphicsAdapter.UseReferenceDevice is enabled.
Merge pull request #2885 from SickheadGames/testfix

UseReferenceDevice Fix
Fixed test to have correct background color even in release builds.
Merge pull request #2886 from SickheadGames/testfix

ScissorRectangleTest Fix
Fixing typo
Merge pull request #2881 from SickheadGames/EffectParameterDebugString

EffectParameter now shows its current value in the watch window.
Merge pull request #2880 from SickheadGames/SpriteFontDescription.Characters

Added missing XNA property, SpriteFontDescription.Characters