Merge pull request #32107 from bogdanvlviv/move-up-activestorage-changelog

Move up activestorage' changelog added by 5292cdf5

[ci skip]

activestorage/CHANGELOG.md

-## Rails 5.2.0.rc1 (January 30, 2018) ##
-
 *   Add source code to published npm package
 
     This allows activestorage users to depend on the javascript source code
@@ -7,6 +5,9 @@
 
     *Richard Macklin*
 
+
+## Rails 5.2.0.rc1 (January 30, 2018) ##
+
 *   Preserve display aspect ratio when extracting width and height from videos
     with rectangular samples in `ActiveStorage::Analyzer::VideoAnalyzer`.