function () {} >>> function() {}
Merge pull request #120 from Daniel-Hug/patch-5

Anonymous function consistency: function () {} >>> function() {}
Simplify arePropertyDescriptorsSupported
Merge pull request #122 from Daniel-Hug/patch-6

Simplify arePropertyDescriptorsSupported
Update es6-shim.js
Add acosh, asinh, atanh tests for big and small numbers
Merge pull request #125 from Daniel-Hug/patch-6

Add acosh, asinh, atanh tests for big and small numbers