GitLab

Removed some extra stuff in the comment/newline in flow map tests, which really should be illegal (since implicit keys can't span multiple lines). It would be impossible to fix if we keep the immediate-output we're doing now - the only way to prevent it would be to hold on to a key's text until we got to the value token to make sure it could be an implicit key

Added explicit doc start/end tokens for the emitter, and set it so that if you try to write after you've already written a full doc, it writes a doc start and continues

Refactored bool emitting to make it 1) correct for the short bool form and 2) not barf on early versions of VS

Moved all the includes to a subfolder yaml-cpp so they don't interfere with other libraries' includes

Refactored emitter operator << overloads to not template them, so it's easier to overload for pointer types