Add support for Mixins to PageLoader.
Change remove(0) to removeLast()
Merge pull request #7 from DrMarcII/mixin

Add support for Mixins to PageLoader.
Add additional tests for private constructors, fields, and setters.
Split private setter and private field tests.
Fix PageLoader to correctly deal with private constructors, static fields, and
private or static getters.
Add tests for static setters and fields.
Minor cleanup to setter Symbol hacking.
Merge pull request #8 from DrMarcII/chromeoptions

Fix handling of private constructors, static fields, and private or static setters.