1. made the header file a bit better
2. msprint can now print to other streams, not just stdout (default: stdout).

Honestly didn't see this til' now, sorry about that!

I like the idea, but I personally have a couple issues with it:

• Macro magic. Instead of defining some messy functions and making a macro for msprint, I'd personally reccomend having a msprint and msfprint or something in that direction.
• stdbool. It is included once and never used, remove that for me will ya?

I added stdbool because I noticed you defined TRUE and FALSE macros. I will change the macro hell into different functions 👍🏽

Please notice that the docstrings you included in the source file is not actually being detected by any sort of documentation generator. I would recomend moving those comments to the header file.