GitLab

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

Flipped the include guard and the pragma, and don't use the pragma for early versions of gcc (< 3.4)

Switched exception constants to const char * const (from const std::string) so we don't have to construct them all in every translation unit, and switched the exception class to derive from std::runtime_error (so it handles what() for us)

Added Anchor() regex (so that we're not just using Alphanumeric to match anchors), but it's still not 100% right (it shouldn't allow non-printable characters, e.g.). Also fixed a test that was broken along these lines (if a colon immediately follows an anchor, it's part of the anchor)

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

Refactored the traits a bit, and added displaying the key to string and numeric key not found errors