[WrapPlus] Decouple the Classic and Semantic line wrapping algorithms into a full python dependency

[evandrocoan]

https://forum.sublimetext.com/t/semantic-linefeed-wrapping-linewrap/33197/10

In the future, I am planning to decouple the Classic and Semantic line wrapping algorithms from this package into a full python dependency because these algorithms can be used anywhere else, not just in Sublime Text. The Semantic line wrapping algorithms I implemented are almost 100% independent from Sublime Text. But the text extraction and the Classic line wrapping are tightly coupled with Sublime Text region and selection API.