Added spec tests (minus tags, directives, and BOM) up through example 5.12 - this exposed an error in line folding
Added spec tests (minus tags, directives, and BOM) up through example 5.12 - this exposed an error in line folding

steinwurf/yaml-cpp,bassosimone/yaml-cpp,steinwurf/yaml-cpp,steinwurf/yaml-cpp,steinwurf/yaml-cpp,eacousineau/yaml_cpp_0_2_7,bassosimone/yaml-cpp,eacousineau/yaml_cpp_0_2_7,bassosimone/yaml-cpp,bassosimone/yaml-cpp