v16.5.2

React DOM

• Fixed a recent <iframe> regression (@JSteunou in #13650)
• Fix updateWrapper so that <textarea>s no longer re-render when data is unchanged (@joelbarbosa in #13643)

Schedule (Experimental)

• Renaming "tracking" API to "tracing" (@bvaughn in #13641)
• Add UMD production+profiling entry points (@bvaughn in #13642)
• Refactored schedule to remove some React-isms and improve performance for when deferred updates time out (@acdlite in #13582)