WordPress maintains the minified version of jquery.masonry.js since there is no official build, however it has been excluded from grunt's minification process. This adds a minification task to grunt, adds it to the precommit hook for JS, minifies the file, and bumps the version on jquery.masonry.min.js. The change to the non minified version was introduced in [38261].
Fixes#37720. See #37666.
Built from https://develop.svn.wordpress.org/trunk@38276
git-svn-id: http://core.svn.wordpress.org/trunk@38217 1a063a9b-81f0-0310-95a4-ce76da25c4cd