Released: WriteableBitmapEx 1.5.0 (Mar 31, 2015)

!This is the final version 1.5.0 of WriteableBitmapEx with WPF, Silverlight, WinRT Windows and Windows Phone XAML and Silverlight support

• Supports a variety of versions including Windows 10 UAP, Windows 8, 8.1, Windows Phone WinRT and Silverlight 7, 8, 8.1

• Added lots of contributions including DrawLine with variable thickness, penning, improved anti-aliasing and Wu's anti-aliasing algorithm.
• Added usage of CohenSutherlandLineClip for DrawLineAa and DrawLine
• Added support for alpha blended filled shapes and adapted the FillSample for WPF
• Added FillPolygonsEvenOdd() which uses the even-odd algorithm to fill complex polygons with more than one closed outline like for the letter O
• Added AdjustBrightness(), AdjustContrast() and AdjustGamma() methods
• Added Gray() method which returns the gray scaled version the bitmap
• Fixed bug in Blit Alpha code for WPF when source format is not pre-multiplied alpha
• Fixed bug #21778 where FromStream for WPF needs to be called inside Init scope
• Fixed issue with IndexOutOfRangeEx in DrawLine method
• Fixed Invalidate for Silverlight BitmapContext.Dispose
• Fixed regression issue with alpha blending for Blit for non-WinRT
• Fixed many more reported issues https://writeablebitmapex.codeplex.com/workitem/list/basic

Contains the WriteableBitmapEx binaries for Windows Phone, WPF, WinRT Windows Store XAML and Silverlight. Download the source for the samples.

Blog posts with more details:
http://kodierer.blogspot.com/2015/03/staying-alive-writeablebitmapex-15.html