For all the contributors out there, a new library will be added to OpenXcom’s dependencies soon (yes I know how much you love those!). yaml-cpp will be supporting all data externalization (yes I know how much you love XML!), so you’ll have to figure out how to get it installed on your respective platform.
For Windows users, the folder structure is also changing: Dependencies will now be split in deps\include\SDL, deps\include\yaml-cpp and deps\lib folders. Check the updated Compiling instructions for more info.