Documented that the SDL_RW* macros no longer exist, and you can't use an older SDL library if you build with SDL 2.0.10.
diff --git a/WhatsNew.txt b/WhatsNew.txt
index 95caf37..66c736f 100644
--- a/WhatsNew.txt
+++ b/WhatsNew.txt
@@ -6,6 +6,7 @@
---------------------------------------------------------------------------
General:
+* The SDL_RW* macros are now functions that are linked from the SDL library
* Added SDL_SIMDGetAlignment(), SDL_SIMDAlloc(), and SDL_SIMDFree(), to allocate memory aligned for SIMD operations for the current CPU
* Added SDL_RenderDrawPointF(), SDL_RenderDrawPointsF(), SDL_RenderDrawLineF(), SDL_RenderDrawLinesF(), SDL_RenderDrawRectF(), SDL_RenderDrawRectsF(), SDL_RenderFillRectF(), SDL_RenderFillRectsF(), SDL_RenderCopyF(), SDL_RenderCopyExF(), to allow floating point precision in the SDL rendering API.
* Added SDL_GetTouchDeviceType() to get the type of a touch device, which can be a touch screen or a trackpad in relative or absolute coordinate mode.
