Update onchange development dependency in package.json

Close mmistakes#2241

Author: mmistakes

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ### Enhancements
 
+- Update [onchange](https://www.npmjs.com/package/onchange) development dependency in `package.json`. [#2241](https://github.com/mmistakes/minimal-mistakes/issues/2241)
 - Add Catalan localized UI text strings. [#2237](https://github.com/mmistakes/minimal-mistakes/pull/2237)
 
 ## [4.16.6](https://github.com/mmistakes/minimal-mistakes/releases/tag/4.16.6)

docs/_docs/18-history.md

@@ -5,14 +5,15 @@ permalink: /docs/history/
 excerpt: "Change log of enhancements and bug fixes made to the theme."
 sidebar:
   nav: docs
-last_modified_at: 2019-08-20T21:40:09-04:00
+last_modified_at: 2019-08-28T08:56:56-04:00
 toc: false
 ---
 
 ## Unreleased
 
 ### Enhancements
 
+- Update [onchange](https://www.npmjs.com/package/onchange) development dependency in `package.json`. [#2241](https://github.com/mmistakes/minimal-mistakes/issues/2241)
 - Add Catalan localized UI text strings. [#2237](https://github.com/mmistakes/minimal-mistakes/pull/2237)
 
 ## [4.16.6](https://github.com/mmistakes/minimal-mistakes/releases/tag/4.16.6)