[babl] NEWS: update

[Øyvind "pippin" Kolås <ok src gnome org>]

commit 9eb81bb3491c0b5ff54bbcf3b10a94c7fc5adb70
Author: Øyvind Kolås <pippin gimp org>
Date:   Thu Jul 25 14:54:49 2019 +0200

    NEWS: update

 NEWS | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/NEWS b/NEWS
index 5ff22eb..4d41fec 100644
--- a/NEWS
+++ b/NEWS
@@ -3,12 +3,12 @@ The NEWS file in the babl source tree is the source location for
 the news section both in the README and the webpage.
                                                                           -->
 
-2019-07-2x babl-0.1.68                                              </dt><dd>
+2019-07-25 babl-0.1.68                                              </dt><dd>
 Added Yu'v' (CIE 1976 UCS) color model.  Fixed a severe non-initialised memory
 issue - that kept us from using fast paths for many babl spaces loaded from
 profile. More fully symmetric conversions between associated and separate
 alpha. Added more converters, both SSE2 and non-SSE2 for matrix-conversion
-between different RGB spaces.  Improvements to website/documentation; babl is now using the terms associated 
alpha and separate alpha, all of: nonpremultiplied-, premultiplied- and nonassociated- alpha are now 
considered deprecated API. HCY luminance is now relative to the RGB space used - no change for sRGB related 
pixel formats.
+between different RGB spaces.  Improvements to website/documentation; babl is now using the terms associated 
alpha and separate alpha, all of: nonpremultiplied-, premultiplied- and nonassociated- alpha are now 
considered deprecated API. HCY luminance is now relative to the RGB space used - no change for sRGB related 
pixel formats. AVX2 acceleration for some linear to float conversions.
 
 2019-06-12 babl-0.1.66                                              </dt><dd>
 Added API call, babl_space_get_rgb_luminance,