GitLab

- Update the call to equals() in node_data::remove() to match the new implementation
- Add unit test for node::remove() to catch this type of bug in the future

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".)