GitLab

Add EmitterStyle, which will allow sequence or map style (i.e., flow or block) to be preserved between parsing and emitting

Fix clang compiler settings, and properly set up warnings so they don't interfere with gtest and gmock

warning C4800: forcing value to bool 'true' or 'false' (performance warning)

for the node test, since it really doesn't make any sense in this context. (It's exactly what we intended with the "unspecified bool type".)

Add ifdef to check if BOOST_FOREACH is defined, and disable tests that use it if it is not available