chore: add to changelog

Signed-off-by: Charlike Mike Reagent <[email protected]>

Author: tunnckoCore

CHANGELOG.md

@@ -11,6 +11,7 @@
  * Improve examples and tests ([#523](https://github.com/node-formidable/node-formidable/pull/523))
  * First step of Code quality improvements ([#525](https://github.com/node-formidable/node-formidable/pull/525))
  * chore(funding): remove patreon & add npm funding field ([#525](https://github.com/node-formidable/node-formidable/pull/532)
+ * Modern Streams API ([#531](https://github.com/node-formidable/node-formidable/pull/531))
 
 ### v1.2.1 (2018-03-20)