ES6 spec-compliant Object.assign shim. From https://github.com/es-shims/es6-shim
^1.0.8
^1.0.3
^1.2.1
^1.0.0
^1.1.0
^1.1.1
^2.5.1
^21.1.1
^16.5.2
=8.8.0
^0.3.3
^1.2.3
^1.0.1
^2.0.2
^0.3.1
^10.3.2
^2.0.0
^1.10.0
^5.9.0