SkColorfilters::HSLAMatrix

Introduce an SkColorFilter_Matrix flavor operating in HSLA space.

(CPU-only for now)

Change-Id: If081de062b9e920c3365bd7b281e45bb069c3d1a
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/231259
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
diff --git a/RELEASE_NOTES.txt b/RELEASE_NOTES.txt
index ec97a87..7e5f871 100644
--- a/RELEASE_NOTES.txt
+++ b/RELEASE_NOTES.txt
@@ -8,9 +8,11 @@
 
  * Added RELEASE_NOTES.txt file
 
-SkDrawLooper is no longer supported in SkPaint or SkCanvas.
+ * SkDrawLooper is no longer supported in SkPaint or SkCanvas.
 
-SkImageFilter API refactor started:
- - Consolidated enum types to use SkTileMode and SkColorChannel
- - Hide filter implementation classes
- - Bumps SkPicture version number
+ * SkImageFilter API refactor started:
+   - Consolidated enum types to use SkTileMode and SkColorChannel
+   - Hide filter implementation classes
+   - Bumps SkPicture version number
+
+ * SkColorFilters::HSLAMatrix - new matrix color filter operating in HSLA space.