* temporarily disable target frameworks * drop DelegateProcessor * drop IImageProcessingContext<TPixel> * drop NamedColors<T> * drop ColorBuilder<T> * drop the *Base postfix for clean class hierarchies * adding basic skeletons * non-generic ImageFrameCollection API definition * non-generic ImageFrameCollection tests * cleanup + docs + more tests * implement ImageFrameCollection methods * tests for generic PixelOperations.To<TDest>() * experimental implementation * fix .ttinclude * generate generic From<TSourcePixel>(...) * fix RgbaVector <--> BT709 Gray pixel conversion * Gray8 and Gray16 using ConvertFromRgbaScaledVector4() by default * fixed all conversion tests * ConstructGif_FromDifferentPixelTypes * fix xmldoc and other StyelCop findings * re-enable all target frameworks * fix NonGenericAddFrame() and NonGenericInsertFrame() * fix remaining bugs