When compiling with clang++ -Wall -Weverything I get a lot of warnings, some about C-style casts in the header, some about using reserved keywords and others (I don't have all in mind).

Would a PR to fix those be mergeable? One of the warnings is about the fact that names starting with _ are reserved by the standard, and this is used for the header guard and the struct names (not the typedefs) and my C is so rusty that I do not remember if it is necessary to name structs (especially when typenaming them after).