fix(scanner): simplify string logic

[amaanq]

Closes #20

@cdacamar can you try this branch out and see if you still get the inconsistent parsing behavior?

I believe the issue stems from asan hooking and changing strcmp, and I'm assuming the windows implementation is similar to this one, or at the very least not like the typical glibc strcmp - hence the extremely bizarre inconsistency. I noticed that the external lexer was not returning the ending tag name after lexing it, which was weird. So I changed the string logic to be simpler and more akin to html's, seems to be good on my end

[cdacamar]

I just tested this branch out: everything works on both MSVC and clang-cl (with and without -fsanitize=adderss).

Thank you!

[amaanq]

np, glad it's fixed! and thanks for the helpful report

[ObserverOfTime]

That's a Heisenbug if I've ever seen one.