v15.3.2

React

• Remove plain object warning from React.createElement & React.cloneElement. (@spudly in #7724)

React DOM

• Add playsInline to supported HTML attributes. (@reaperhulk in #7519)
• Add as to supported HTML attributes. (@kevinslin in #7582)
• Improve DOM nesting validation warning about whitespace. (@spicyj in #7515)
• Avoid "Member not found" exception in IE10 when calling preventDefault() in Synthetic Events. (@g-palmer in #7411)
• Fix memory leak in onSelect implementation. (@AgtLucas in #7533)
• Improve robustness of document.documentMode checks to handle Google Tag Manager. (@SchleyB in #7594)
• Add more cases to controlled inputs warning. (@marcin-mazurek in #7544)
• Handle case of popup blockers overriding document.createEvent. (@Andarist in #7621)
• Fix issue with dangerouslySetInnerHTML and SVG in Internet Explorer. (@zpao in #7618)
• Improve handling of Japanese IME on Internet Explorer. (@msmania in #7107)

React Test Renderer

• Support error boundaries. (@millermedeiros in #7558, #7569, #7619)
• Skip null ref warning. (@Aweary in #7658)

React Perf Add-on

• Ensure lifecycle timers are stopped on errors. (@gaearon in #7548)