v0.29.0

Why the minor version was bumped

• Ensure that ES3 browsers get both Object.is and Object.assign
• Ensuring Number.parseInt === parseInt (failed in FF 37)

Enhancements

• Improve Object.assign to avoid leaking arguments in v8
• a little more accurate Math.cbrt (#335)
• Avoid reassigning argument variables to avoid deoptimizations
• Ensure that shallowly wrapped Maps’ and Sets’ prototypes aren't one level too far away.

Testing

• Test on io.js v1.7 and v1.8
• Update chai and use new matchers
• Test cleanups
• Adding Symbol.unscopables tests
• Adding tests to ensure that default iterators on builtins === the appropriate prototype function.