RELEASE_NOTES: update

Signed-off-by: Timothy Gu <[email protected]>
Signed-off-by: Michael Niedermayer <[email protected]>

RELEASE_NOTES

@@ -7,18 +7,20 @@
    since the release of FFmpeg 2.2.
 
    In this release, there are lots of internal overhauls that make FFmpeg a
-   more accessible project for new developers. Many important new features
-   like QTKit and AVFoundation input devices are committed. Contributions done
-   by Libav such as a new native Opus decoder are also merged.
+   more accessible project for new developers. Many important new
+   optimizations and features like QTKit and AVFoundation input devices are
+   committed. Contributions done by Libav such as a new native Opus decoder
+   are also merged.
 
    Because of the increasing difficulty to maintain and lack of maintainers,
    we are very sorry to say that we have removed all Blackfin and SPARC
    architecture assembly optimizations with the cleanups done. If you are
    interested in maintaining optimization for these two architecture, feel
    free to contact us and we will restore the code!
 
-   Since this release, the traditional Changelog file is upgraded to this
-   modern-looking release note. Old changelogs are moved to doc/Changelog.old.
+   Oh, and since this release, this modern-looking release note is provided in
+   addition to the old-style Changelog file, to make it easier for you to
+   focus on the most important features in this release.
 
    Enjoy!