Add implementation for in-head, in-head-noscript & after-head insertion modes
Add implementation for in-head, in-head-noscript & after-head insertion modes

https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-inhead
https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-inheadnoscript
https://html.spec.whatwg.org/multipage/syntax.html#the-after-head-insertion-mode

iabudiab/HTMLKit,iabudiab/HTMLKit,iabudiab/HTMLKit,iabudiab/HTMLKit,iabudiab/HTMLKit